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2. Influence of Support Material of PtSnNiGa/C Electrocatalysts for Ethanol Oxidation

Author

Deise M Santos, Giordano T Paganoto, Maria A. R. Queiroz, Marco C. C. Guimarães, and Josimar Ribeiro

Subjects
ethanol oxidation reaction, gallium, proton exchange membrane fuel cells, quaternary electrocatalysts, Science, Chemistry, QD1-999
Abstract

Ethanol is a promising alternative source for fuel cells due to its low toxicity and high power density. However, the cleavage of the C-C bond, CO poisoning, and low electrocatalyst stability are still considered crucial issues. To overcome this limitation, binary, ternary and quaternary electrocatalysts have been investigated along with new carbon supports. This paper presents a physicochemical and electrochemical investigation of quaternary PtSnNiGa/C electrocatalysts supported on Vulcan XC72 and Printex-L6 carbons and also a carbon produced by natural gas pyrolysis in an Argon plasma torch (Black Plasma). The electrochemical characterization was performed through cyclic voltammetry, chronoamperometry, chronopotentiometry and electrochemical impedance spectroscopy in the presence of ethanol 1.0 mol L-1. Energy dispersive X-ray spectroscopy, X-ray diffraction, Raman spectroscopy and transmission electron microscopy were also carried out for physicochemical characterization. The electrochemical results show that the quaternary electrocatalysts supported on Vulcan XC72 and Printex-L6 carbons display a high current normalized by Pt mass and are more stable than the electrocatalyst supported on Black Plasma. In addition, the quaternary electrocatalysts with reduced Pt loading display better electrocatalytic activity towards the EOR compared to high Pt loading electrocatalysts. DOI: http://dx.doi.org/10.17807/orbital.v9i3.949

Published
2017
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3. Electrochemical and Morphological Investigations of Ga Addition to Pt Electrocatalyst Supported on Carbon

Author

Giordano T. Paganoto, Deise M. Santos, Tereza C. S. Evangelista, Marco C. C. Guimarães, Maria Tereza W. D. Carneiro, and Josimar Ribeiro

Subjects
Technology, Medicine, Science
Abstract

This paper is consisted in the synthesis of platinum-based electrocatalysts supported on carbon (Vulcan XC-72) and investigation of the addition of gallium in their physicochemical and electrochemical properties toward ethanol oxidation reaction (EOR). PtGa/C electrocatalysts were prepared through thermal decomposition of polymeric precursor method at a temperature of 350°C. Six different compositions were homemade: Pt50Ga50/C, Pt60Ga40/C, Pt70Ga30/C, Pt80Ga20/C, Pt90Ga10/C, and Pt100/C. These electrocatalysts were electrochemically characterized by cyclic voltammetry (CV), chronoamperometry (CA), chronopotentiometry (CP), and electrochemical impedance spectroscopy (EIS) in the presence and absence of ethanol 1.0 mol L−1. Thermogravimetric analysis (TGA), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), and transmission electron microscopy (TEM) were also carried out for a physicochemical characterization of those materials. XRD results showed the main peaks of face-centered cubic Pt. The particle sizes obtained from XRD and TEM analysis range from 7.2 nm to 12.9 nm. The CV results indicate behavior typical of Pt-based electrocatalysts in acid medium. The CV, EIS, and CA data reveal that the addition of up to 31% of gallium to the Pt highly improves catalytic activity on EOR response when compared to Pt100/C.

Published
2017
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8. Amenability and Uniqueness

Author

Ciuperca, A., Giordano, T., Ng, P. W., and Niu, Z.

Subjects
Mathematics - Operator Algebras, 46L05, 46L10
Abstract

The main result of this paper is a characterization of properly infinite injective von Neumann algebras and of nuclear C*-algebras by using a uniqueness theorem, based on generalizations of Voiculescu's famous Weyl-von Neumann theorem., Comment: 22 pages

Published
2012

9. Envelope Algebras of Partial Actions as Groupoid C*-Algebras

Author

Exel, R., Giordano, T., and Goncalves, D.

Subjects
Mathematics - Operator Algebras, 47-xx
Abstract

We describe the envelope C*-algebra associated to a partial action of a countable discrete group on a locally compact space as a groupoid C*-algebra (more precisely as a C*-algebra from an equivalence relation) and we use our approach to show that, for a large class of partial actions of Z on the Cantor set, the envelope C*-algebra is an AF-algebra. We also completely characterize partial actions of a countable discrete group on a compact space such that the envelope action acts in a Hausdorff space., Comment: 13 pages

Published
2008

12. Acoustically semitransparent nanofibrous meshes appraised by high signal-to-noise-ratio MEMS microphones

Author

Hutomo Suryo Wasisto, Sebastian Anzinger, Giovanni Acanfora, Aloysius Farrel, Valentina Sabatini, Elisa Grimoldi, Vasco Marelli, Nikita Ovsiannikov, Konstantin Tkachuk, Giordano Tosolini, Carmine Lucignano, Marco Mietta, Guangzhao Zhang, Marc Fueldner, and Erwin Peiner

Subjects
Engineering (General). Civil engineering (General), TA1-2040
Abstract

Abstract Microelectromechanical system-based microphones demand high ingress protection levels with regard to their use in harsh environment. Here, we develop environmental protective components comprising polyimide nanofibers combined onto polyether ether ketone fabric meshes and subsequently appraise their impact on the electroacoustic properties of high signal-to-noise-ratio microelectromechanical system-based microphones via industry-standard characterizations and theoretical simulations. Being placed directly on top of the microphone sound port, the nanofiber mesh die-cut parts with an inner diameter of 1.4 mm result in signal-to-noise-ratio and insertion losses of (2.05 ± 0.16) dB(A) and (0.30 ± 0.11) dBFS, respectively, in electroacoustic measurements. Hence, a high signal-to-noise-ratio value of (70.05 ± 0.17) dB(A) can be maintained by the mesh-protected microphone system. Due to their high temperature stability, acoustic performance, environmental robustness, and industry-scale batch production, these nanofibrous meshes reveal high potential to be practically implemented in high-market-volume applications of packaged microelectromechanical system-based microphones.

Published
2024
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16. Substrate for Surface-Enhanced Raman Spectroscopy Formed by Gold Nanoparticles Buried in Poly(methyl methacrylate)

Author

Fernanda de Sá Teixeira, Marcia L. A. Temperini, Maria Cecília Barbosa da Silveira Salvadori, Giordano T. Paganoto, and Natália Kazumi Gushiken

Subjects
Materials science, Nanocomposite, General Chemical Engineering, Substrate (chemistry), General Chemistry, Surface-enhanced Raman spectroscopy, Poly(methyl methacrylate), Article, chemistry.chemical_compound, Chemistry, Chemical engineering, chemistry, Colloidal gold, visual_art, visual_art.visual_art_medium, Methyl methacrylate, QD1-999
Abstract

In this work, we present some properties and use of a nanocomposite formed by gold nanoparticles (NPs) into poly(methyl methacrylate) (PMMA) and its application as substrates for surface-enhanced Raman spectroscopy (SERS). The nanocomposite was formed using low-energy (49 eV) ion implantation of gold in PMMA using a cathodic arc plasma gun. The gold NPs are formed spontaneously from the implanted ions and they remain isolated from each other by the polymer medium surrounding them, ensuring a spacing between the NPs of less than 10 nm (hot spot places). The NPs form below the surface, protected from the environment, guaranteeing the stability of the composite layer. Moreover, here, we present an interesting approach to concentrate analyte molecules closer to the metal surface using the swelling effect in PMMA. Using absorption of the analyte, the molecules stay in the gaps between NPs, which is a good solution for one of the biggest challenges in SERS, that is, to guide molecules to the hot spot places.

Published
2020

17. Surface-Enhanced Raman and Surface-Enhanced fluorescence of charged dyes based on alginate silver nanoparticles and its calcium alginate hydrogel beads

Author

Mari F. Nicolas, Jayr H. Marin, Giordano T. Paganoto, Rafaella F. Fernandes, and Marcia L.A. Temperini

Subjects
Silver, Alginates, Metal Nanoparticles, Hydrogels, CORANTES, Coloring Agents, Instrumentation, Spectroscopy, Atomic and Molecular Physics, and Optics, Analytical Chemistry
Abstract

This study shows a new SERS (Surface-enhanced Raman Scattering) and SEF (Surface-enhanced Fluorescence) platform approach, in which substrates were constructed from the silver nanoparticles stabilized by alginate polymer (AgALG) and encapsulated in hydrogel calcium alginate beads (AgALGbead). In this regard, the electrostatic repulsion or attraction concerning the charged dyes and the carboxylate groups of the alginate could define the distances between the probe molecules and metallic nanoparticles to determine the SERS or SEF effect. In this sense, the anionic dye named New Indocyanine Green (IR-820) and the cationic dye Rhodamine 6G (Rh6G) were selected to discuss the alginate's ability to quench or enhance the fluorescence and the Raman dyes signals. Furthermore, the SEF effect using the IR-820 dye can be detected for the near-infrared emission (S

Published
2021

19. Non-traditional intrinsic luminescence from non-conjugated polymer dots: designing a hybrid biomaterial

Author

Rafaella F. Fernandes, Marcia L. A. Temperini, and Giordano T. Paganoto

Subjects
BIOMATERIAIS, Nanocomposite, Materials science, Photoluminescence, Polymers and Plastics, Organic Chemistry, Nanoparticle, Infrared spectroscopy, Bioengineering, Surface-enhanced Raman spectroscopy, Photochemistry, Biochemistry, Fluorescence, symbols.namesake, symbols, Raman spectroscopy, Luminescence
Abstract

Herein, an eco-friendly and facile synthesis of nitrogen-containing non-conjugated polymer dots (NCPD) with optimal blue emission is reported from the biopolymer β-glucan with a peptide–polysaccharide linkage (namely NH2-β-glucan). The crosslink-enhanced emission effect was proposed to explain the strong luminescence of the NCPDs possessing either non-emissive or weakly emissive sub-luminophores. The water-soluble NCPDs were synthesized via a feasible and facile route to produce a fluorescent material by dehydration/crosslinking reactions without additional matrix compositing. The nanocomposite's photoluminescence spectra unveiled the red-shifted emission from 420 to 515 nm as the excitation wavelengths vary from 300 to 450 nm, showing a maximum blue emission at 430 nm for the 340 nm excitation wavelength. Here, luminescent NCPDs with carboxyl, amino, and hydroxyl groups were comprehensively characterized, in which acidic/alkaline conditions were varied to probe the influence of surface charge on their fluorescence emission. The study also demonstrates that SERS (Surface Enhanced Raman Spectroscopy) is an excellent technique for exploring the chemical structures using Ag and Au nanoparticles. In closing, we have presented a consistent study using Raman and IR spectroscopy to lead to an undoubted identification of promising fluorescent non-conjugated polymer dots.

Published
2021

20. Late Migration of Fully Deployed Left Main Coronary Stent into Aortic Root: A Late Complication and Its Surgical Management

Author

Tanveer Ahmad, Azza Abdelalem Alafifi, Mubarak Aldossari, Giordano Tasca, and Nasser Aljerayed

Subjects
coronary stent migration, left main coronary, myocardial infarction, percutaneous coronary intervention, Anesthesiology, RD78.3-87.3, Diseases of the circulatory (Cardiovascular) system, RC666-701
Abstract

Migration and embolization of a deployed stent is a rare complication of percutaneous coronary interventions (PCI) and can result in serious and potentially life-threatening complications. There are many reports of intracoronary stent entrapment, stripping, and dislodgement during PCI, however, only a few reports about migration. We report a rare case of migration of the left main coronary stent into the aortic root, which happened 5 months after the procedure and was treated by its partial removal through aortotomy along with surgical revascularization. The patient was discharged 5 days later, after an uneventful hospital stay.

Published
2024
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22. Oncogenic signaling pathways in the Cancer Genome Atlas

Author

Sanchez-Vega, F., Mina, M., Armenia, J., Chatila, W. K., Luna, A., La, K. C., Dimitriadoy, S., Liu, D. L., Kantheti, H. S., Saghafinia, S., Chakravarty, D., Daian, F., Gao, Q., Bailey, M. H., Liang, W. -W., Foltz, S. M., Shmulevich, I., Ding, L., Heins, Z., Ochoa, A., Gross, B., Gao, J., Zhang, H., Kundra, R., Kandoth, C., Bahceci, I., Dervishi, L., Doğrusöz, Uğur, Zhou, W., Shen, H., Laird, P. W., Way, G. P., Greene, C. S., Liang, H., Xiao, Y., Wang, C., Iavarone, A., Berger, A. H., Bivona, T. G., Lazar, A. J., Hammer, G. D., Giordano, T., Kwong, L. N., McArthur, G., Huang, C., Tward, A. D., Frederick, M. J., McCormick, F., Meyerson, M., Caesar-Johnson, S. J., Demchok, J. A., Felau, I., Kasapi, M., Ferguson, M. L., Hutter, C. M., Sofia, H. J., Tarnuzzer, R., Wang, Z., Yang, L., Zenklusen, J. C., Zhang, J. J., Chudamani, S., Liu, J., Lolla, L., Naresh, R., Pihl, T., Sun, Q., Wan, Y., Wu, Y., Cho, J., DeFreitas, T., Frazer, S., Gehlenborg, N., Getz, G., Heiman, D. I., Kim, J., Lawrence, M. S., Lin, P., Meier, S., Noble, M. S., Saksena, G., Voet, D., Bernard, B., Chambwe, N., Dhankani, V., Knijnenburg, T., Kramer, R., Leinonen, K., Liu, Y., Miller, M., Reynolds, S., Thorsson, V., Zhang, W., Akbani, R., Broom, B. M., Hegde, A. M., Ju, Z., Kanchi, R. S., Korkut, A., Li, J., Ling, S., Liu W., Lu, Y., Mills, G. B., Ng, K. -S., Rao, A., Ryan, M., Wang, J., Weinstein, J. N., Zhang, J., Abeshouse, A., de, Bruijn, I., Gross, B. E., Heins, Z. J., La, K., Ladanyi, M., Nissan, M. G., Phillips, S. M., Reznik, E., Sander, C., Schultz, N., Sheridan, R., Sumer, S. O., Sun, Y., Taylor, B. S., Anur, P., Peto, M., Spellman, P., Benz, C., Stuart, J. M., Wong, C. K., Yau, C., Hayes, D. N., Parker, J. S., Wilkerson, M. D., Ally, A., Balasundaram, M., Bowlby, R., Brooks, D., Carlsen, R., Chuah, E., Dhalla, N., Holt, R., Jones, S. J. M., Kasaian, K., Lee, D., Ma, Y., Marra, M. A., Mayo, M., Moore, R. A., Mungall, A. J., Mungall, K., Robertson, A. G., Sadeghi, S., Schein, J. E., Sipahimalani, P., Tam, A., Thiessen, N., Tse, K., Wong, T., Berger, A. C., Beroukhim, R., Cherniack, A. D., Cibulskis, C., Gabriel, S. B., Gao, G. F., Ha, G., Schumacher, S. E., Shih, J., Kucherlapati, M. H., Kucherlapati, R. S., Baylin, S., Cope, L., Danilova, L., Bootwalla, M. S., Lai, P. H., Maglinte, D. T., Van, Den, Berg, D. J., Weisenberger, D. J., Auman, J. T., Balu, S., Bodenheimer, T., Fan, C., Hoadley, K. A., Hoyle, A. P., Jefferys, S. R., Jones, C. D., Meng, S., Mieczkowski, P. A., Mose, L. E., Perou, A. H., Perou, C. M., Roach, J., Shi, Y., Simons, J. V., Skelly, T., Soloway, M. G., Tan, D., Veluvolu, U., Fan, H., Hinoue, T., Bellair, M., Chang, K., Covington, K., Creighton, C. J., Dinh, H., Doddapaneni, H., Donehower, L. A., Drummond, J., Gibbs, R. A., Glenn, R., Hale, W., Han, Y., Hu, J., Korchina, V., Lee, S., Lewis, L., Li, W., Liu, X., Morgan, M., Morton, D., Muzny, D., Santibanez, J., Sheth, M., Shinbrot, E., Wang, L., Wang, M., Wheeler, D. A., Xi, L., Zhao, F., Hess, J., Appelbaum, E. L., Bailey, M., Cordes, M. G., Fronick, C. C., Fulton, L. A., Fulton, R. S., Mardis, E. R., McLellan, M. D., Miller, C. A., Schmidt, H. K., Wilson, R. K., Crain, D., Curley, E., Gardner, J., Lau, K., Mallery, D., Morris, S., Paulauskis, J., Penny, R., Shelton, C., Shelton, T., Sherman, M., Thompson, E., Yena, P., Bowen, J., Gastier-Foster, J. M., Gerken, M., Leraas, K. M., Lichtenberg, T. M., Ramirez, N. C., Wise, L., Zmuda, E., Corcoran, N., Costello, T., Hovens, C., Carvalho, A. L., de, Carvalho, A. C., Fregnani, J. H., Longatto-Filho, A., Reis, R. M., Scapulatempo-Neto, C., Silveira, H. C. S., Vidal, D. O., Burnette, A., Eschbacher, J., Hermes, B., Noss, A., Singh, R., Anderson, M. L., Castro, P. D., Ittmann, M., Huntsman, D., Kohl, B., Le, X., Thorp, R., Andry, C., Duffy, E. R., Lyadov, V., Paklina, O., Setdikova, G., Shabunin, A., Tavobilov, M., McPherson, C., Warnick, R., Berkowitz, R., Cramer, D., Feltmate, C., Horowitz, N., Kibel, A., Muto, M., Raut, C. P., Malykh, A., Barnholtz-Sloan, J. S., Barrett, W., Devine, K., Fulop, J., Ostrom, Q. T., Shimmel, K., Wolinsky, Y., Sloan, A. E., De, Rose, A., Giuliante, F., Goodman, M., Karlan, B. Y., Hagedorn, C. H., Eckman, J., Harr, J., Myers, J., Tucker, K., Zach, L. A., Deyarmin, B., Hu, H., Kvecher, L., Larson, C., Mural, R. J., Somiari, S., Vicha, A., Zelinka, T., Bennett, J., Iacocca, M., Rabeno, B., Swanson, P., Latour, M., Lacombe, L., Têtu, B., Bergeron, A., McGraw, M., Staugaitis, S. M., Chabot, J., Hibshoosh, H., Sepulveda, A., Su, T., Wang, T., Potapova, O., Voronina, O., Desjardins, L., Mariani, O., Roman-Roman, S., Sastre, X., Stern, M. -H., Cheng, F., Signoretti, S., Berchuck, A., Bigner, D., Lipp, E., Marks, J., McCall, S., McLendon, R., Secord, A., Sharp, A., Behera, M., Brat, D. J., Chen, A., Delman, K., Force, S., Khuri, F., Magliocca, K., Maithel, S., Olson, J. J., Owonikoko, T., Pickens, A., Ramalingam, S., Shin, D. M., Sica, G., Van, Meir, E. G., Eijckenboom, W., Gillis, A., Korpershoek, E., Looijenga, L., Oosterhuis, W., Stoop, H., van, Kessel, K. E., Zwarthoff, E. C., Calatozzolo, C., Cuppini, L., Cuzzubbo, S., DiMeco, F., Finocchiaro, G., Mattei, L., Perin, A., Pollo, B., Chen, C., Houck, J., Lohavanichbutr, P., Hartmann, A., Stoehr, C., Stoehr, R., Taubert, H., Wach, S., Wullich, B., Kycler, W., Murawa, D., Wiznerowicz, M., Chung, K., Edenfield, W. J., Martin, J., Baudin, E., Bubley, G., Bueno, R., De, Rienzo, A., Richards, W. G., Kalkanis, S., Mikkelsen, T., Noushmehr, H., Scarpace, L., Girard, N., Aymerich, M., Campo, E., Giné, E., Guillermo, A. L., Van, Bang, N., Hanh, P. T., Phu, B. D., Tang, Y., Colman, H., Evason, K., Dottino, P. R., Martignetti, J. A., Gabra, H., Juhl, H., Akeredolu, T., Stepa, S., Hoon, D., Ahn, K., Kang, K. J., Beuschlein, F., Breggia, A., Birrer, M., Bell, D., Borad, M., Bryce, A. H., Castle, E., Chandan, V., Cheville, J., Copland, J. A., Farnell, M., Flotte, T., Giama, N., Ho, T., Kendrick, M., Kocher, J. -P., Kopp, K., Moser, C., Nagorney, D., O'Brien, D., O'Neill, B. P., Patel, T., Petersen, G., Que, F., Rivera, M., Roberts, L., Smallridge, R., Smyrk, T., Stanton, M., Thompson, R. H., Torbenson, M., Yang, J. D., Zhang, L., Brimo, F., Ajani, J. A., Gonzalez, A. M. A., Behrens, C., Bondaruk, J., Broaddus, R., Czerniak, B., Esmaeli, B., Fujimoto, J., Gershenwald, J., Guo, C., Logothetis, C., Meric-Bernstam, F., Moran, C., Ramondetta, L., Rice, D., Sood, A., Tamboli, P., Thompson, T., Troncoso, P., Tsao, A., Wistuba, I., Carter, C., Haydu, L., Hersey, P., Jakrot, V., Kakavand, H., Kefford, R., Lee, K., Long, G., Mann, G., Quinn, M., Saw, R., Scolyer, R., Shannon, K., Spillane, A., Stretch, J., Synott, M., Thompson, J., Wilmott, J., Al-Ahmadie, H., Chan, T. A., Ghossein, R., Gopalan, A., Levine, D. A., Reuter, V., Singer, S., Singh, B., Tien, N. V., Broudy, T., Mirsaidi, C., Nair, P., Drwiega, P., Miller, J., Smith, J., Zaren, H., Park, J. -W., Hung, N. P., Kebebew, E., Linehan, W. M., Metwalli, A. R., Pacak, K., Pinto, P. A., Schiffman, M., Schmidt, L. S., Vocke, C. D., Wentzensen, N., Worrell, R., Yang, H., Moncrieff, M., Goparaju, C., Melamed, J., Pass, H., Botnariuc, N., Caraman, I., Cernat, M., Chemencedji, I., Clipca, A., Doruc, S., Gorincioi, G., Mura, S., Pirtac, M., Stancul, I., Tcaciuc, D., Albert, M., Alexopoulou, I., Arnaout, A., Bartlett, J., Engel, J., Gilbert, S., Parfitt, J., Sekhon, H., Thomas, G., Rassl, D. M., Rintoul, R. C., Bifulco, C., Tamakawa, R., Urba, W., Hayward, N., Timmers, H., Antenucci, A., Facciolo, F., Grazi, G., Marino, M., Merola, R., de, Krijger, R., Gimenez-Roqueplo, A. -P., Piché, A., Chevalier, S., McKercher, G., Birsoy, K., Barnett, G., Brewer, C., Farver, C., Naska, T., Pennell, N. A., Raymond, D., Schilero, C., Smolenski, K., Williams, F., Morrison, C., Borgia, J. A., Liptay, M. J., Pool, M., Seder, C. W., Junker, K., Omberg, L., Dinkin, M., Manikhas, G., Alvaro, D., Bragazzi, M. C., Cardinale, V., Carpino, G., Gaudio, E., Chesla, D., Cottingham, S., Dubina, M., Moiseenko, F., Dhanasekaran, R., Becker, K. -F., Janssen, K. -P., Slotta-Huspenina, J., Abdel-Rahman, M. H., Aziz, D., Bell, S., Cebulla, C. M., Davis, A., Duell, R., Elder, J. B., Hilty, J., Kumar, B., Lang, J., Lehman, N. L., Mandt, R., Nguyen, P., Pilarski, R., Rai, K., Schoenfield, L., Senecal, K., Wakely, P., Hansen, P., Lechan, R., Powers, J., Tischler, A., Grizzle, W. E., Sexton, K. C., Kastl, A., Henderson, J., Porten, S., Waldmann, J., Fassnacht, M., Asa, S. L., Schadendorf, D., Couce, M., Graefen, M., Huland, H., Sauter, G., Schlomm, T., Simon, R., Tennstedt, P., Olabode, O., Nelson, M., Bathe, O., Carroll, P. R., Chan, J. M., Disaia, P., Glenn, P., Kelley, R. K., Landen, C. N., Phillips, J., Prados, M., Simko, J., Smith-McCune, K., VandenBerg, S., Roggin, K., Fehrenbach, A., Kendler, A., Sifri, S., Steele, R., Jimeno, A., Carey, F., Forgie, I., Mannelli, M., Carney, M., Hernandez, B., Campos, B., Herold-Mende, C., Jungk, C., Unterberg, A., von, Deimling, A., Bossler, A., Galbraith, J., Jacobus, L., Knudson, M., Knutson, T., Ma, D., Milhem, M., Sigmund, R., Godwin, A. K., Madan, R., Rosenthal, H. G., Adebamowo, C., Adebamowo, S. N., Boussioutas, A., Beer, D., Mes-Masson, A. -M., Saad, F., Bocklage, T., Landrum, L., Mannel, R., Moore, K., Moxley, K., Postier, R., Walker, J., Zuna, R., Feldman, M., Valdivieso, F., Dhir, R., Luketich, J., Pinero, E. M. M., Quintero-Aguilo, M., Carlotti, C. G., Jr., Dos, Santos, J. S., Kemp, R., Sankarankuty, A., Tirapelli, D., Catto, J., Agnew, K., Swisher, E., Creaney, J., Robinson, B., Shelley, C. S., Godwin, E. M., Kendall, S., Shipman, C., Bradford, C., Carey, T., Haddad, A., Moyer, J., Peterson, L., Prince, M., Rozek, L., Wolf, G., Bowman, R., Fong, K. M., Yang, I., Korst, R., Rathmell, W. K., Fantacone-Campbell, J. L., Hooke, J. A., Kovatich, A. J., Shriver, C. D., DiPersio, J., Drake, B., Govindan, R., Heath, S., Ley, T., Van, Tine, B., Westervelt, P., Rubin, M. A., Lee, J. I., Aredes, N. D., Mariamidze, A., Van, Allen, E. M., Ciriello, G., The, Cancer, Genome, Atlas, Research, Network.tif, Doğrusöz, Uğur, Cancer Genome Atlas Research Network, Caesar-Johnson, S.J., Demchok, J.A., Felau, I., Kasapi, M., Ferguson, M.L., Hutter, C.M., Sofia, H.J., Tarnuzzer, R., Wang, Z., Yang, L., Zenklusen, J.C., Zhang, J.J., Chudamani, S., Liu, J., Lolla, L., Naresh, R., Pihl, T., Sun, Q., Wan, Y., Wu, Y., Cho, J., DeFreitas, T., Frazer, S., Gehlenborg, N., Getz, G., Heiman, D.I., Kim, J., Lawrence, M.S., Lin, P., Meier, S., Noble, M.S., Saksena, G., Voet, D., Zhang, H., Bernard, B., Chambwe, N., Dhankani, V., Knijnenburg, T., Kramer, R., Leinonen, K., Liu, Y., Miller, M., Reynolds, S., Shmulevich, I., Thorsson, V., Zhang, W., Akbani, R., Broom, B.M., Hegde, A.M., Ju, Z., Kanchi, R.S., Korkut, A., Li, J., Liang, H., Ling, S., Liu, W., Lu, Y., Mills, G.B., Ng, K.S., Rao, A., Ryan, M., Wang, J., Weinstein, J.N., Zhang, J., Abeshouse, A., Armenia, J., Chakravarty, D., Chatila, W.K., de Bruijn, I., Gao, J., Gross, B.E., 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Walker J., Zuna R., Feldman M., Valdivieso F., Dhir R., Luketich J., Pinero E.M.M., Quintero-Aguilo M., Carlotti C.G., Dos Santos J.S., Kemp R., Sankarankuty A., Tirapelli D., Catto J., Agnew K., Swisher E., Creaney J., Robinson B., Shelley C.S., Godwin E.M., Kendall S., Shipman C., Bradford C., Carey T., Haddad A., Moyer J., Peterson L., Prince M., Rozek L., Wolf G., Bowman R., Fong K.M., Yang I., Korst R., Rathmell W.K., Fantacone-Campbell J.L., Hooke J.A., Kovatich A.J., Shriver C.D., DiPersio J., Drake B., Govindan R., Heath S., Ley T., Van Tine B., Westervelt P., Rubin M.A., Lee J.I., Aredes N.D., Mariamidze A., Van Allen E.M., and Ciriello G.

Subjects
0301 basic medicine, cancer genome atlas, cancer genomics, combination therapy, pan-cancer, PanCanAtlas, precision oncology, signaling pathways, TCGA, therapeutics, whole exome sequencing, Signaling pathways, Somatic cell, Wnt Protein, Cancer Genome Atlas Research Network, Biochemistry, Medical and Health Sciences, Phosphatidylinositol 3-Kinases, Transforming Growth Factor beta, Neoplasms, Databases, Genetic, LS2_1, Cancer genomics, LS4_6, 610 Medicine & health, 11 Medical and Health Sciences, Cancer, biology, Wnt signaling pathway, cancer genomic, Precision oncology, Biological Sciences, Cell cycle, DNA methylation, Signal transduction, CICLO CELULAR, Life Sciences & Biomedicine, Genes, Neoplasm, Humans, Neoplasms/genetics, Neoplasms/pathology, Phosphatidylinositol 3-Kinases/genetics, Phosphatidylinositol 3-Kinases/metabolism, Signal Transduction/genetics, Transforming Growth Factor beta/genetics, Transforming Growth Factor beta/metabolism, Tumor Suppressor Protein p53/genetics, Tumor Suppressor Protein p53/metabolism, Wnt Proteins/genetics, Wnt Proteins/metabolism, Biotechnology, Human, Signal Transduction, signaling pathway, EXPRESSION, Biochemistry & Molecular Biology, GENES, Pan-cancer, Therapeutics, General Biochemistry, Genetics and Molecular Biology, NO, Databases, 03 medical and health sciences, Genetic, Genetics, Combination therapy, Protein kinase B, Gene, SIGNATURES, Cancer genome atlas, Science & Technology, LANDSCAPE, MUTATIONS, Biochemistry, Genetics and Molecular Biology(all), Human Genome, Whole exome sequencing, Cell Biology, Transforming growth factor beta, cancer genome atla, 06 Biological Sciences, COMPREHENSIVE MOLECULAR CHARACTERIZATION, Wnt Proteins, therapeutic, Good Health and Well Being, 030104 developmental biology, Genes, PanCanAtla, biology.protein, Cancer research, Neoplasm, Phosphatidylinositol 3-Kinase, Tumor Suppressor Protein p53, Digestive Diseases, Genetics and Molecular Biology(all), Developmental Biology
Abstract

Genetic alterations in signaling pathways that control cell-cycle progression, apoptosis, and cell growth are common hallmarks of cancer, but the extent, mechanisms, and co-occurrence of alterations in these pathways differ between individual tumors and tumor types. Using mutations, copy-number changes, mRNA expression, gene fusions and DNA methylation in 9,125 tumors profiled by The Cancer Genome Atlas (TCGA), we analyzed the mechanisms and patterns of somatic alterations in ten canonical pathways: cell cycle, Hippo, Myc, Notch, Nrf2, PI-3-Kinase/Akt, RTK-RAS, TGFβ signaling, p53 and β-catenin/Wnt. We charted the detailed landscape of pathway alterations in 33 cancer types, stratified into 64 subtypes, and identified patterns of co-occurrence and mutual exclusivity. Eighty-nine percent of tumors had at least one driver alteration in these pathways, and 57% percent of tumors had at least one alteration potentially targetable by currently available drugs. Thirty percent of tumors had multiple targetable alterations, indicating opportunities for combination therapy. An integrated analysis of genetic alterations in 10 signaling pathways in >9,000 tumors profiled by TCGA highlights significant representation of individual and co-occurring actionable alterations in these pathways, suggesting opportunities for targeted and combination therapies. Michael Seiler, Peter G. Smith, Ping Zhu, Silvia Buonamici, and Lihua Yu are employees of H3 Biomedicine, Inc. Parts of this work are the subject of a patent application: WO2017040526 titled “Splice variants associated with neomorphic sf3b1 mutants.” Shouyoung Peng, Anant A. Agrawal, James Palacino, and Teng Teng are employees of H3 Biomedicine, Inc. Andrew D. Cherniack, Ashton C. Berger, and Galen F. Gao receive research support from Bayer Pharmaceuticals. Gordon B. Mills serves on the External Scientific Review Board of Astrazeneca. Anil Sood is on the Scientific Advisory Board for Kiyatec and is a shareholder in BioPath. Jonathan S. Serody receives funding from Merck, Inc. Kyle R. Covington is an employee of Castle Biosciences, Inc. Preethi H. Gunaratne is founder, CSO, and shareholder of NextmiRNA Therapeutics. Christina Yau is a part-time employee/consultant at NantOmics. Franz X. Schaub is an employee and shareholder of SEngine Precision Medicine, Inc. Carla Grandori is an employee, founder, and shareholder of SEngine Precision Medicine, Inc. Robert N. Eisenman is a member of the Scientific Advisory Boards and shareholder of Shenogen Pharma and Kronos Bio. Daniel J. Weisenberger is a consultant for Zymo Research Corporation. Joshua M. Stuart is the founder of Five3 Genomics and shareholder of NantOmics. Marc T. Goodman receives research support from Merck, Inc. Andrew J. Gentles is a consultant for Cibermed. Charles M. Perou is an equity stock holder, consultant, and Board of Directors member of BioClassifier and GeneCentric Diagnostics and is also listed as an inventor on patent applications on the Breast PAM50 and Lung Cancer Subtyping assays. Matthew Meyerson receives research support from Bayer Pharmaceuticals; is an equity holder in, consultant for, and Scientific Advisory Board chair for OrigiMed; and is an inventor of a patent for EGFR mutation diagnosis in lung cancer, licensed to LabCorp. Eduard Porta-Pardo is an inventor of a patent for domainXplorer. Han Liang is a shareholder and scientific advisor of Precision Scientific and Eagle Nebula. Da Yang is an inventor on a pending patent application describing the use of antisense oligonucleotides against specific lncRNA sequence as diagnostic and therapeutic tools. Yonghong Xiao was an employee and shareholder of TESARO, Inc. Bin Feng is an employee and shareholder of TESARO, Inc. Carter Van Waes received research funding for the study of IAP inhibitor ASTX660 through a Cooperative Agreement between NIDCD, NIH, and Astex Pharmaceuticals. Raunaq Malhotra is an employee and shareholder of Seven Bridges, Inc. Peter W. Laird serves on the Scientific Advisory Board for AnchorDx. Joel Tepper is a consultant at EMD Serono. Kenneth Wang serves on the Advisory Board for Boston Scientific, Microtech, and Olympus. Andrea Califano is a founder, shareholder, and advisory board member of DarwinHealth, Inc. and a shareholder and advisory board member of Tempus, Inc. Toni K. Choueiri serves as needed on advisory boards for Bristol-Myers Squibb, Merck, and Roche. Lawrence Kwong receives research support from Array BioPharma. Sharon E. Plon is a member of the Scientific Advisory Board for Baylor Genetics Laboratory. Beth Y. Karlan serves on the Advisory Board of Invitae.

Published
2018

31. Erratum: The Immune Landscape of Cancer (Immunity (2018) 48(4) (812–830.e14), (S1074761318301213), (10.1016/j.immuni.2018.03.023))

Author

Thorsson, V., Gibbs, D. L., Brown, S. D., Wolf, D., Bortone, D. S., Ou Yang, T. -H., Porta-Pardo, E., Gao, G. F., Plaisier, C. L., Eddy, J. A., Ziv, E., Culhane, A. C., Paull, E. O., Sivakumar, I. K. A., Gentles, A. J., Malhotra, R., Farshidfar, F., Colaprico, A., Parker, J. S., Mose, L. E., N. S., Vo, Liu, J., Liu, Y., Rader, J., Dhankani, V., Reynolds, S. M., Bowlby, R., Califano, A., Cherniack, A. D., Anastassiou, D., Bedognetti, D., Mokrab, Y., Newman, A. M., Rao, A., Chen, K., Krasnitz, A., Hu, H., Malta, T. M., Noushmehr, H., Pedamallu, C. S., Bullman, S., Ojesina, A. I., Lamb, A., Zhou, W., Shen, H., Choueiri, T. K., Weinstein, J. N., Guinney, J., Saltz, J., Holt, R. A., Rabkin, C. S., Caesar-Johnson, S. J., Demchok, J. A., Felau, I., Kasapi, M., Ferguson, M. L., Hutter, C. M., Sofia, H. J., Tarnuzzer, R., Wang, Z., Yang, L., Zenklusen, J. C., Zhang, J. J., Chudamani, S., Lolla, L., Naresh, R., Pihl, T., Sun, Q., Wan, Y., Wu, Y., Cho, J., Defreitas, T., Frazer, S., Gehlenborg, N., Getz, G., Heiman, D. I., Kim, J., Lawrence, M. S., Lin, P., Meier, S., Noble, M. S., Saksena, G., Voet, D., Zhang, H., Bernard, B., Chambwe, N., Knijnenburg, T., Kramer, R., Leinonen, K., Miller, M., Reynolds, S., Shmulevich, I., Zhang, W., Akbani, R., Broom, B. M., Hegde, A. M., Ju, Z., Kanchi, R. S., Korkut, A., Li, J., Liang, H., Ling, S., Liu, W., Lu, Y., Mills, G. B., K. -S., Ng, Ryan, M., Wang, J., Zhang, J., Abeshouse, A., Armenia, J., Chakravarty, D., Chatila, W. K., de Bruijn, I., Gao, J., Gross, B. E., Heins, Z. J., Kundra, R., La, K., Ladanyi, M., Luna, A., Nissan, M. G., Ochoa, A., Phillips, S. M., Reznik, E., Sanchez-Vega, F., Sander, C., Schultz, N., Sheridan, R., Sumer, S. O., Sun, Y., Taylor, B. S., Anur, P., Peto, M., Spellman, P., Benz, C., Stuart, J. M., Wong, C. K., Yau, C., Hayes, D. N., Wilkerson, M. D., Ally, A., Balasundaram, M., Brooks, D., Carlsen, R., Chuah, E., Dhalla, N., Holt, R., Jones, S. J. M., Kasaian, K., Lee, D., Ma, Y., Marra, M. A., Mayo, M., Moore, R. A., Mungall, A. J., Mungall, K., Robertson, A. G., Sadeghi, S., Schein, J. E., Sipahimalani, P., Tam, A., Thiessen, N., Tse, K., Wong, T., Berger, A. C., Beroukhim, R., Cibulskis, C., Gabriel, S. B., Ha, G., Meyerson, M., Schumacher, S. E., Shih, J., Kucherlapati, M. H., Kucherlapati, R. S., Baylin, S., Cope, L., Danilova, L., Bootwalla, M. S., Lai, P. H., Maglinte, D. T., Van Den Berg, D. J., Weisenberger, D. J., Auman, J. T., Balu, S., Bodenheimer, T., Fan, C., Hoadley, K. A., Hoyle, A. P., Jefferys, S. R., Jones, C. D., Meng, S., Mieczkowski, P. A., Perou, A. H., Perou, C. M., Roach, J., Shi, Y., Simons, J. V., Skelly, T., Soloway, M. G., Tan, D., Veluvolu, U., Fan, H., Hinoue, T., Laird, P. W., Bellair, M., Chang, K., Covington, K., Creighton, C. J., Dinh, H., Doddapaneni, H., Donehower, L. A., Drummond, J., Gibbs, R. A., Glenn, R., Hale, W., Han, Y., Hu, J., Korchina, V., Lee, S., Lewis, L., Li, W., Liu, X., Morgan, M., Morton, D., Muzny, D., Santibanez, J., Sheth, M., Shinbrot, E., Wang, L., Wang, M., Wheeler, D. A., Xi, L., Zhao, F., Hess, J., Appelbaum, E. L., Bailey, M., Cordes, M. G., Ding, L., Fronick, C. C., Fulton, L. A., Fulton, R. S., Kandoth, C., Mardis, E. R., Mclellan, M. D., Miller, C. A., Schmidt, H. K., Wilson, R. K., Crain, D., Curley, E., Gardner, J., Lau, K., Mallery, D., Morris, S., Paulauskis, J., Penny, R., Shelton, C., Shelton, T., Sherman, M., Thompson, E., Yena, P., Bowen, J., Gastier-Foster, J. M., Gerken, M., Leraas, K. M., Lichtenberg, T. M., Ramirez, N. C., Wise, L., Zmuda, E., Corcoran, N., Costello, T., Hovens, C., Carvalho, A. L., de Carvalho, A. C., Fregnani, J. H., Longatto-Filho, A., Reis, R. M., Scapulatempo-Neto, C., Silveira, H. C. S., Vidal, D. O., Burnette, A., Eschbacher, J., Hermes, B., Noss, A., Singh, R., Anderson, M. L., Castro, P. D., Ittmann, M., Huntsman, D., Kohl, B., Le, X., Thorp, R., Andry, C., Duffy, E. R., Lyadov, V., Paklina, O., Setdikova, G., Shabunin, A., Tavobilov, M., Mcpherson, C., Warnick, R., Berkowitz, R., Cramer, D., Feltmate, C., Horowitz, N., Kibel, A., Muto, M., Raut, C. P., Malykh, A., Barnholtz-Sloan, J. S., Barrett, W., Devine, K., Fulop, J., Ostrom, Q. T., Shimmel, K., Wolinsky, Y., Sloan, A. E., De Rose, A., Giuliante, F., Goodman, M., Karlan, B. Y., Hagedorn, C. H., Eckman, J., Harr, J., Myers, J., Tucker, K., Zach, L. A., Deyarmin, B., Kvecher, L., Larson, C., Mural, R. J., Somiari, S., Vicha, A., Zelinka, T., Bennett, J., Iacocca, M., Rabeno, B., Swanson, P., Latour, M., Lacombe, L., Tetu, B., Bergeron, A., Mcgraw, M., Staugaitis, S. M., Chabot, J., Hibshoosh, H., Sepulveda, A., Su, T., Wang, T., Potapova, O., Voronina, O., Desjardins, L., Mariani, O., Roman-Roman, S., Sastre, X., Stern, M. -H., Cheng, F., Signoretti, S., Berchuck, A., Bigner, D., Lipp, E., Marks, J., Mccall, S., Mclendon, R., Secord, A., Sharp, A., Behera, M., Brat, D. J., Chen, A., Delman, K., Force, S., Khuri, F., Magliocca, K., Maithel, S., Olson, J. J., Owonikoko, T., Pickens, A., Ramalingam, S., Shin, D. M., Sica, G., Van Meir, E. G., Eijckenboom, W., Gillis, A., Korpershoek, E., Looijenga, L., Oosterhuis, W., Stoop, H., van Kessel, K. E., Zwarthoff, E. C., Calatozzolo, C., Cuppini, L., Cuzzubbo, S., Dimeco, F., Finocchiaro, G., Mattei, L., Perin, A., Pollo, B., Chen, C., Houck, J., Lohavanichbutr, P., Hartmann, A., Stoehr, C., Stoehr, R., Taubert, H., Wach, S., Wullich, B., Kycler, W., Murawa, D., Wiznerowicz, M., Chung, K., Edenfield, W. J., Martin, J., Baudin, E., Bubley, G., Bueno, R., De Rienzo, A., Richards, W. G., Kalkanis, S., Mikkelsen, T., Scarpace, L., Girard, N., Aymerich, M., Campo, E., Gine, E., Guillermo, A. L., Van Bang, N., Hanh, P. T., Phu, B. D., Tang, Y., Colman, H., Evason, K., Dottino, P. R., Martignetti, J. A., Gabra, H., Juhl, H., Akeredolu, T., Stepa, S., Hoon, D., Ahn, K., Kang, K. J., Beuschlein, F., Breggia, A., Birrer, M., Bell, D., Borad, M., Bryce, A. H., Castle, E., Chandan, V., Cheville, J., Copland, J. A., Farnell, M., Flotte, T., Giama, N., Ho, T., Kendrick, M., Kocher, J. -P., Kopp, K., Moser, C., Nagorney, D., O'Brien, D., O'Neill, B. P., Patel, T., Petersen, G., Que, F., Rivera, M., Roberts, L., Smallridge, R., Smyrk, T., Stanton, M., Thompson, R. H., Torbenson, M., Yang, J. D., Zhang, L., Brimo, F., Ajani, J. A., Gonzalez, A. M. A., Behrens, C., Bondaruk, J., Broaddus, R., Czerniak, B., Esmaeli, B., Fujimoto, J., Gershenwald, J., Guo, C., Lazar, A. J., Logothetis, C., Meric-Bernstam, F., Moran, C., Ramondetta, L., Rice, D., Sood, A., Tamboli, P., Thompson, T., Troncoso, P., Tsao, A., Wistuba, I., Carter, C., Haydu, L., Hersey, P., Jakrot, V., Kakavand, H., Kefford, R., Lee, K., Long, G., Mann, G., Quinn, M., Saw, R., Scolyer, R., Shannon, K., Spillane, A., Stretch, O., Synott, M., Thompson, J., Wilmott, J., Al-Ahmadie, H., Chan, T. A., Ghossein, R., Gopalan, A., Levine, D. A., Reuter, V., Singer, S., Singh, B., Tien, N. V., Broudy, T., Mirsaidi, C., Nair, P., Drwiega, P., Miller, J., Smith, J., Zaren, H., Park, J. -W., Hung, N. P., Kebebew, E., Linehan, W. M., Metwalli, A. R., Pacak, K., Pinto, P. A., Schiffman, M., Schmidt, L. S., Vocke, C. D., Wentzensen, N., Worrell, R., Yang, H., Moncrieff, M., Goparaju, C., Melamed, J., Pass, H., Botnariuc, N., Caraman, I., Cernat, M., Chemencedji, I., Clipca, A., Doruc, S., Gorincioi, G., Mura, S., Pirtac, M., Stancul, I., Tcaciuc, D., Albert, M., Alexopoulou, I., Arnaout, A., Bartlett, J., Engel, J., Gilbert, S., Parfitt, J., Sekhon, H., Thomas, G., Rassl, D. M., Rintoul, R. C., Bifulco, C., Tamakawa, R., Urba, W., Hayward, N., Timmers, H., Antenucci, A., Facciolo, F., Grazi, G., Marino, M., Merola, R., de Krijger, R., Gimenez-Roqueplo, A. -P., Piche, A., Chevalier, S., Mckercher, G., Birsoy, K., Barnett, G., Brewer, C., Farver, C., Naska, T., Pennell, N. A., Raymond, D., Schilero, C., Smolenski, K., Williams, F., Morrison, C., Borgia, J. A., Liptay, M. J., Pool, M., Seder, C. W., Junker, K., Omberg, L., Dinkin, M., Manikhas, G., Alvaro, D., Bragazzi, M. C., Cardinale, V., Carpino, G., Gaudio, E., Chesla, D., Cottingham, S., Dubina, M., Moiseenko, F., Dhanasekaran, R., Becker, K. -F., Janssen, K. -P., Slotta-Huspenina, J., Abdel-Rahman, M. H., Aziz, D., Bell, S., Cebulla, C. M., Davis, A., Duell, R., Elder, J. B., Hilty, J., Kumar, B., Lang, J., Lehman, N. L., Mandt, R., Nguyen, P., Pilarski, R., Rai, K., Schoenfield, L., Senecal, K., Wakely, P., Hansen, P., Lechan, R., Powers, J., Tischler, A., Grizzle, W. E., Sexton, K. C., Kastl, A., Henderson, J., Porten, S., Waldmann, J., Fassnacht, M., Asa, S. L., Schadendorf, D., Couce, M., Graefen, M., Huland, H., Sauter, G., Schlomm, T., Simon, R., Tennstedt, P., Olabode, O., Nelson, M., Bathe, O., Carroll, P. R., Chan, J. M., Disaia, P., Glenn, P., Kelley, R. K., Landen, C. N., Phillips, J., Prados, M., Simko, J., Smith-McCune, K., Vandenberg, S., Roggin, K., Fehrenbach, A., Kendler, A., Sifri, S., Steele, R., Jimeno, A., Carey, F., Forgie, I., Mannelli, M., Carney, M., Hernandez, B., Campos, B., Herold-Mende, C., Jungk, C., Unterberg, A., von Deimling, A., Bossler, A., Galbraith, J., Jacobus, L., Knudson, M., Knutson, T., Ma, D., Milhem, M., Sigmund, R., Godwin, A. K., Madan, R., Rosenthal, H. G., Adebamowo, C., Adebamowo, S. N., Boussioutas, A., Beer, D., Giordano, T., Mes-Masson, A. -M., Saad, F., Bocklage, T., Landrum, L., Mannel, R., Moore, K., Moxley, K., Postier, R., Walker, J., Zuna, R., Feldman, M., Valdivieso, F., Dhir, R., Luketich, J., Pinero, E. M. M., Quintero-Aguilo, M., Carlotti, C. G., Dos Santos, J. S., Kemp, R., Sankarankuty, A., Tirapelli, D., Catto, J., Agnew, K., Swisher, E., Creaney, J., Robinson, B., Shelley, C. S., Godwin, E. M., Kendall, S., Shipman, C., Bradford, C., Carey, T., Haddad, A., Moyer, J., Peterson, L., Prince, M., Rozek, L., Wolf, G., Bowman, R., Fong, K. M., Yang, I., Korst, R., Rathmell, W. K., Fantacone-Campbell, J. L., Hooke, J. A., Kovatich, A. J., Shriver, C. D., Dipersio, J., Drake, B., Govindan, R., Heath, S., Ley, T., Van Tine, B., Westervelt, P., Rubin, M. A., Lee, J. I., Aredes, N. D., Mariamidze, A., Serody, J. S., Demicco, E. G., Disis, M. L., and Vincent, B. G.

Subjects
immune, cancer, methods
Published
2019

35. Amenable actions of discrete groups

Author

Elliott, G. A. and Giordano, T.

Subjects
Mathematics::Logic, Mathematics::Operator Algebras, Mathematics::General Topology
Abstract

A structure theorem is established for amenable actions of a countable discrete group

Published
2017

38. Dynamic Motions of Topological Defects in Nematic Liquid Crystals under Spatial Confinement

Author

Tejal Pawale, Justin Swain, Mohammad Reza Hashemi, Giordano Tierra, and Xiao Li

Subjects
defect annihilation, dynamic motion, liquid crystals, topological defects, Physics, QC1-999, Technology
Abstract

Abstract Topological defects (TDs) have become a sensational topic due to their significant influence on the unusual optical and physiochemical characteristics of the material. To facilitate their application across a wide range of disciplines it is desirable to analyze and gain fundamental understanding of TDs in both equilibrium and nonequilibrium systems. Liquid crystals (LCs) are considered an ideal system for study given the direct visualization of TDs and a straightforward analyzation process. In addition to the equilibrium morphology of LC TDs, it is also of great interest to track and control the formation and annihilation of defects during thermodynamic processes. However, controlling the dynamic behavior of formed defects remains a challenge. Here, nematic LCs confined in a cell exhibiting surfaces with periodic anchoring conditions containing surface topography are relied on. The effects of patterned surface characteristics such as width, periodicity, and degree of curvature on defects dynamic motion, stabilization, and annihilation are explored. The computational experiments recapitulate the TDs transition path and provide free energy‐based predictions of critical distances for defect annihilation. Taken together, this simple approach offers a promising opportunity to control the dynamics of TDs in LCs through chemical patterned surfaces with topography.

Published
2023
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39. Complete heart block caused by sinus of valsalva pseudoaneurysm—A rare case

Author

Tanveer Ahmad, Samah Esmaeel Abohamar, Hussain Hado, Giordano Tasca, and Nasser Aljerayed

Subjects
aortic root pseudoaneurysm, blunt trauma to the chest, complete heart block, polytrauma, sinus of valsalva pseudoaneurysm, Anesthesiology, RD78.3-87.3, Diseases of the circulatory (Cardiovascular) system, RC666-701
Abstract

Acquired pseudoaneurysms of the aortic root involving the sinus of Valsalva (SOV) are rare and serious complications arising from trauma, infection, or following cardiac surgery or intervention. Complete heart block (CHB) is an atypical presentation of SOV pseudoaneurysm due to either direct compression effects or involvement of the main conducting system by blood and inflammatory cell infiltration. Herein, we describe a rare case of a patient who presented with CHB caused by an SOV pseudoaneurysm following polytrauma and was treated with surgical closure of pseudoaneurysm followed by implantation of a permanent pacemaker to treat the persistent CHB.

Published
2023
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42. Lower Pill Burden and Once-Daily Antiretroviral Treatment Regimens for HIV Infection: A Meta-Analysis of Randomized Controlled Trials

Author

Nachega, J. B., Parienti, J.-J., Uthman, Olalekan A., Gross, R., Dowdy, D. W., Sax, P. E., Gallant, J. E., Mugavero, M. J., Mills, E. J., and Giordano, T. P.

Subjects
wc_503_2, wc_503_6, wc_503
Abstract

Background\ud \ud Contemporary antiretroviral treatment regimens are simpler than in the past, with lower pill burden and once-daily dosing frequency common. We performed a meta-analysis of randomized controlled trials (RCTs) to investigate the impact of pill burden and once-daily vs twice-daily dosing on ART adherence and virological outcomes.\ud \ud Methods\ud \ud A literature search of 4 electronic databases through 31 March 2013 was used. RCTs comparing once-daily vs twice-daily ART regimens that also reported on adherence and virological suppression were included. Study design, study population characteristics, intervention, outcome measures, and study quality were extracted. Study quality was rated using the Cochrane risk-of-bias tool.\ud \ud Results\ud \ud Nineteen studies met our inclusion criteria (N = 6312 adult patients). Higher pill burden was associated with both lower adherence rates (P = .004) and worse virological suppression (P < .0001) in both once-daily and twice-daily subgroups, although the association with adherence in the once-daily subgroup was not statistically significant. The average adherence was modestly higher in once-daily regimens than twice-daily regimens (weighted mean difference = 2.55%; 95% confidence interval [CI], 1.23 to 3.87; P = .0002). Patients on once-daily regimens did not achieve virological suppression more frequently than patients on twice-daily regimens (relative risk [RR] = 1.01; 95% CI, 0.99 to 1.03; P = .50). Both adherence and viral load suppression decreased over time, but adherence decreased less with once-daily dosing than with twice-daily dosing.\ud \ud Conclusions\ud \ud Lower pill burden was associated with both better adherence and virological suppression. Adherence, but not virological suppression, was slightly better with once- vs twice-daily regimens.

Published
2014

43. Molecular mechanisms regulated by the histone methyltransferase EZH2 in adrenocortical carcinoma

Author

Tabbal, H., primary, Drelon, C., additional, Mathieu, M., additional, Rodriguez, S., additional, Batisse-Lignier, M., additional, Dumontet, T., additional, Sahut-Barnola, I., additional, Pointud, J.C., additional, Lefrançois-Martinez, A.M., additional, Giordano, T., additional, Ragazzon, B., additional, Bertherat, J., additional, Martinez, A., additional, and Val, P., additional

Published
2016
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44. Pancreatic islets recruit mesenchymal stem cells by release of chemokines

Author

Sordi V, Malosio ML, Marchesi F, Mercalli A, Giordano T, Belmonte N, FERRARI, GIULIANA, Leone BE, Bertuzzi F, Zerbini G, Allavena P, Bonifacio E, PIEMONTI , LORENZO, Sordi, V, Malosio, Ml, Marchesi, F, Mercalli, A, Giordano, T, Belmonte, N, Ferrari, Giuliana, Leone, Be, Bertuzzi, F, Zerbini, G, Allavena, P, Bonifacio, E, and Piemonti, Lorenzo

Published
2005

45. TTF1 expression in non-small cell lung carcinoma: association with TTF1 gene amplification and improved survival

Author

Perner, S, Wagner, P L, Soltermann, A, LaFargue, C, Tischler, V, Weir, B A, Weder, W, Meyerson, M, Giordano, T J, Moch, H, Rubin, M A, and University of Zurich

Subjects
2734 Pathology and Forensic Medicine, 10022 Division of Surgical Research, 10255 Clinic for Thoracic Surgery, 10049 Institute of Pathology and Molecular Pathology, 610 Medicine & health, Pathology and Forensic Medicine
Published
2009
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46. Matrix-valued random walks and variations on property AT

Author

Giordano, T. (Thierry), Handelman, D. (David), and Universitäts- und Landesbibliothek Münster

Subjects
Computer Science::Programming Languages, ddc:510, Mathematics
Abstract

We reformulate matrix-valued random walks and their associated group actions in terms of dimension groups, suitably modified to deal with measure-theoretic classification. This leads naturally to a notion of rank denoted AT(n), for integers n (approximately transitive, that is, AT, actions constitute the rank one situation). This yields wide classes of examples, and easily verified criteria for basic properties (such as ergodicity) are established. We present an (ergodic) AT(2) action of the integers (from an involution) that is not AT, effectively answering an old question of Thouvenot, but on the other hand, give criteria for matrix-valued random walks to be AT. One of the criteria resembles a result of Mineka on mass cancellation. What are known as bounded AT actions in the literature are shown to be exactly the AT actions for which the corresponding random walk comes from a sequence of Poisson distributions, and we show that the natural involutions on bounded AT actions have orbit space that is AT (unlike more general AT actions), and generically are bounded. We also present a rather unusual ergodic action of the free group on two generators which is AT(2) (and not AT), but is given by a constant sequence (for an amenable group, a constant sequence would yield an uninteresting action).

Published
2008

47. Editorial of Special Issue 'Unconventional Drone-Based Surveying'

Author

Arianna Pesci, Giordano Teza, and Massimo Fabris

Subjects
n/a, Motor vehicles. Aeronautics. Astronautics, TL1-4050
Abstract

Nowadays, Unmanned Aerial Vehicles (UAVs), as well as Unmanned Surface Vehicles (USVs) or also Unmanned Underwater Vehicles (UUVs), later on simply called drones, have reached a sufficient degree of maturity to allow their use for various purposes [...]

Published
2023
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48. Differential immunohistochemical detection of transforming growth factor alpha, amphiregulin and CRIPTO in human normal and malignant breast tissues

Author

PANICO L, D'ANTONIO A, SALVATORE G, MEZZA E, TORTORA G, DE LAURENTIIS M, DE PLACIDO S, GIORDANO T, MERINO M, SALOMON DS, MULLICK WJ, PETTINATO G, SCHNITT SJ, BIANCO AR, CIARDIELLO, Fortunato, Panico, L, D'Antonio, A, Salvatore, G, Mezza, E, Tortora, G, DE LAURENTIIS, M, DE PLACIDO, S, Giordano, T, Merino, M, Salomon, D, Mullick, Wj, Pettinato, G, Schnitt, Sj, Bianco, Ar, and Ciardiello, Fortunato

Subjects
Adult, EGF Family of Proteins, Membrane Glycoproteins, Epidermal Growth Factor, Breast Neoplasms, Middle Aged, Transforming Growth Factor alpha, GPI-Linked Proteins, Amphiregulin, Epithelium, Neoplasm Proteins, Immunoenzyme Techniques, Receptors, Estrogen, Lymphatic Metastasis, Humans, Intercellular Signaling Peptides and Proteins, Female, Breast, Growth Substances, Receptors, Progesterone, Carcinoma in Situ, Glycoproteins
Abstract

The expression of growth factors, such as transforming growth factor alpha (TGF alpha), amphiregulin (AR) and CRIPTO, a type-1 tyrosine-kinase growth factor receptor (erbB-2), and a tumor-suppressor gene (p53), that have been implicated in the development and/or the progression of breast cancer, was evaluated by immunohistochemistry in 100 human primary infiltrating breast carcinomas (IBC). AR and CRIPTO immunoreactivity was also assessed in 55 human breast ductal carcinomas in situ (DCIS). Within the 100 IBC, 80, 50, 73, 17, and 34 tumors expressed moderate to high levels of TGF alpha, AR, CRIPTO, erbB-2, and p53 respectively. In addition, AR and CRIPTO immunoreactivity were found in 11 and in 26 out of 55 DCIS respectively. In contrast, only 4, 3, and 2 out of 10 normal mammary-gland samples were weakly positive for TGF alpha, AR, and CRIPTO expression, respectively, whereas none was positive for erbB-2 or p53. Within the 100 IBC, expression of erbB-2 significantly correlated with high histologic and nuclear grading, with high growth fraction, and with estrogen-receptor (ER)- and progesterone-receptor (PgR)-negative tumors. A statistically significant correlation was also observed between p53 expression and high histologic grading, high growth fraction, and PgR-negative tumors. In contrast, no significant correlations were found between TGF alpha, AR, and CRIPTO immunoreactivity and various clinicopathological parameters, with the exception of a positive correlation between TGF alpha and ER expression. These data demonstrate that TGF alpha, AR, and CRIPTO expression are significantly increased in malignant mammary epithelium relative to normal epithelium. In particular, the differential expression of CRIPTO may serve as a potential tumor marker for breast carcinogenesis.

Published
1996

49. [Complex anal fistula with a recess above the levator ani muscles: report of a case complicated by haemorrhagic colitis]

Author

Celi, D., Desogus, A. I., Cucinotta, A., Lucibello, L., Giordano, T., Metro, Daniela, Bonardelli, P., Cocuzza, G., and Brunetto, D.

Subjects
Treatment Outcome, Anal Canal, Humans, Rectal Fistula, Female, Middle Aged, Colitis, Gastrointestinal Hemorrhage, Muscle, Skeletal, Perineum
Abstract

Anal fistula surgery offers very little in the way of new developments. As early as the 14th century John of Arden defined the rules for surgical therapy. The numerous classifications adopted are often contradictory and unclear, and no clearly defined pathogenesis of the condition has been established. Complex anal fistula with a recess above the elevator ani muscles requires very careful and meticulous therapeutic treatment because of the risk of damaging the sphincter. In the case reported here the patient presented a very complex fistula which was followed by onset of severe haemorrhagic colitis without any clinical, endoscopic, radiological, or histological evidence of inflammatory bowel disease prior to surgical treatment.

Published
2005

50. Selective butyrylcholinesterase inhibition elevates brain acetylcholine, augments learning and lowers Alzheimer -amyloid peptide in rodent

Author

Holloway, H. W., Brossi, A., Giordano, T., Lahiri, D. K., Chen, D., Greig, N. H., Yu, Q.-S., Mamczarz, J., Sambamurti, K., Ingram, D. K., Pepeu, G., Furukawa, K., Utsuki, T., Wang, Y., and Scali, C.

Abstract

Like acetylcholinesterase, butyrylcholinesterase (BChE) inactivates the neurotransmitter acetylcholine (ACh) and is hence a viable therapeutic target in Alzheimer's disease, which is characterized by a cholinergic deficit. Potent, reversible, and brain-targeted BChE inhibitors (cymserine analogs) were developed based on binding domain structures to help elucidate the role of this enzyme in the central nervous system. In rats, cymserine analogs caused long-term inhibition of brain BChE and elevated extracellular ACh levels, without inhibitory effects on acetylcholinesterase. In rat brain slices, selective BChE inhibition augmented long-term potentiation. These compounds also improved the cognitive performance (maze navigation) of aged rats. In cultured human SK-N-SH neuroblastoma cells, intra- and extracellular β-amyloid precursor protein, and secreted β-amyloid peptide levels were reduced without affecting cell viability. Treatment of transgenic mice that overexpressed human mutant amyloid precursor protein also resulted in lower β-amyloid peptide brain levels than controls. Selective, reversible inhibition of brain BChE may represent a treatment for Alzheimer's disease, improving cognition and modulating neuropathological markers of the disease.

Published
2005
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