402 results on '"Gualtieri R"'
Search Results
152. Design and pre-flight performance of SPIDER 280 GHz receivers
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Zmuidzinas, Jonas, Gao, Jian-Rong, Shaw, E. C., Ade, P. A. R., Akers, S., Amiri, M., Austermann, Jason E., Beall, James A., Becker, D.T., Benton, S.J., Bergman, A. S., Bock, J.J., Bond, J.R., Bryan, S.A., Chiang, H.C., Contaldi, C.R., Domagalski, R.S., Dore, O., Duff, S. M., Duivenvoorden, A.J., Eriksen, H.K., Farhang, M., Filippini, J. P., Fissel, L.M., Fraisse, A.A., Freese, K., Galloway, M., Gambrel, A. E., Gandilo, N.N., Ganga, K., Grigorian, A., Gualtieri, R, Gudmundsson, J.E., Halpern, M., Hartley, J., Hasselfield, M., Hilton, G., Holmes, W., Hristov, V.V., Huang, Z., Hubmayr, Johannes, Irwin, K.D., Jones, W.C., Kahn, A., Kuo, C.L., Kermish, Z.D., Lennox, A., Leung, J. S.-Y., Megerian, K., Reintsema, C., Li, S., Mason, P.V., Runyan, M. C., Moncelsi, L., Morford, T.A., Nagy, J.M., Nie, R., Mocanu, L. M., Padilla, I.L., Netterfield, C. B., Osherson, B., Rahlin, A.S., Redmond, S., Turner, A. D., Romualdez, L.J., Nolta, M., Ruhl, J.E., Shariff, J.A., Shiu, C., Soler, J.D., Song, X., Trangsrud, A., Thommesen, H., Tucker, C., Tucker, R.S., Ullom, Joel, van der List, J.F., Van Lanen, Jeff, Vissers, M. R., Weber, A. C., Wen, S., Wehus, I.K., Wiebe, D.V., Young, E.Y., Zmuidzinas, Jonas, Gao, Jian-Rong, Shaw, E. C., Ade, P. A. R., Akers, S., Amiri, M., Austermann, Jason E., Beall, James A., Becker, D.T., Benton, S.J., Bergman, A. S., Bock, J.J., Bond, J.R., Bryan, S.A., Chiang, H.C., Contaldi, C.R., Domagalski, R.S., Dore, O., Duff, S. M., Duivenvoorden, A.J., Eriksen, H.K., Farhang, M., Filippini, J. P., Fissel, L.M., Fraisse, A.A., Freese, K., Galloway, M., Gambrel, A. E., Gandilo, N.N., Ganga, K., Grigorian, A., Gualtieri, R, Gudmundsson, J.E., Halpern, M., Hartley, J., Hasselfield, M., Hilton, G., Holmes, W., Hristov, V.V., Huang, Z., Hubmayr, Johannes, Irwin, K.D., Jones, W.C., Kahn, A., Kuo, C.L., Kermish, Z.D., Lennox, A., Leung, J. S.-Y., Megerian, K., Reintsema, C., Li, S., Mason, P.V., Runyan, M. C., Moncelsi, L., Morford, T.A., Nagy, J.M., Nie, R., Mocanu, L. M., Padilla, I.L., Netterfield, C. B., Osherson, B., Rahlin, A.S., Redmond, S., Turner, A. D., Romualdez, L.J., Nolta, M., Ruhl, J.E., Shariff, J.A., Shiu, C., Soler, J.D., Song, X., Trangsrud, A., Thommesen, H., Tucker, C., Tucker, R.S., Ullom, Joel, van der List, J.F., Van Lanen, Jeff, Vissers, M. R., Weber, A. C., Wen, S., Wehus, I.K., Wiebe, D.V., and Young, E.Y.
- Abstract
In this work we describe upgrades to the Spider balloon-borne telescope in preparation for its second flight, currently planned for December 2021. The Spider instrument is optimized to search for a primordial B-mode polarization signature in the cosmic microwave background at degree angular scales. During its first flight in 2015, Spider mapped ~10% of the sky at 95 and 150 GHz. The payload for the second Antarctic flight will incorporate three new 280 GHz receivers alongside three refurbished 95- and 150 GHz receivers from Spider's first flight. In this work we discuss the design and characterization of these new receivers, which employ over 1500 feedhorn-coupled transition-edge sensors. We describe pre-flight laboratory measurements of detector properties, and the optical performance of completed receivers. These receivers will map a wide area of the sky at 280 GHz, providing new information on polarized Galactic dust emission that will help to separate it from the cosmological signal.
153. Multi-mode coupled focal planes for high precision measurements of large scale CMB polarization
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Lamagna, L., Bagliani, D., Biasotti, M., de Bernardis, P., Gatti, F., Gualtieri, R., Masi, S., Pisano, Giampaolo, Lamagna, L., Bagliani, D., Biasotti, M., de Bernardis, P., Gatti, F., Gualtieri, R., Masi, S., and Pisano, Giampaolo
- Abstract
We describe the design and properties of a multi-mode detector system for photon detection at mm wavelengths. We modeled its basic elements (absorber, integrating cavity, waveguide and horn antenna) through numerical simulations, and built a prototype single-pixel system for performance validation. Following a successful verification of the modeling approach, we plan to optimize the system performance in view of applications to CMB polarization measurements with large throughput focal planes.
154. SWIPE: a bolometric polarimeter for the Large-Scale Polarization Explorer
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Holland, Wayne S., Zmuidzinas, Jonas, de Bernardis, P., Aiola, S., Amico, G., Battistelli, E., Coppolecchia, A., Cruciani, A., D' Addabbo, A., D' Alessandro, G., De Gregori, S., De Petris, M., Goldie, D., Gualtieri, R., Haynes, V., Lamagna, L., Maffei, Bruno, Masi, S., Nati, F., Ng, M. Wah, Pagano, L., Piacentini, F., Piccirillo, Lucio, Pisano, Giampaolo, Romeo, G., Salatino, M., Schillaci, A., Tommasi, E., Withington, S., Holland, Wayne S., Zmuidzinas, Jonas, de Bernardis, P., Aiola, S., Amico, G., Battistelli, E., Coppolecchia, A., Cruciani, A., D' Addabbo, A., D' Alessandro, G., De Gregori, S., De Petris, M., Goldie, D., Gualtieri, R., Haynes, V., Lamagna, L., Maffei, Bruno, Masi, S., Nati, F., Ng, M. Wah, Pagano, L., Piacentini, F., Piccirillo, Lucio, Pisano, Giampaolo, Romeo, G., Salatino, M., Schillaci, A., Tommasi, E., and Withington, S.
- Abstract
The balloon-borne LSPE mission is optimized to measure the linear polarization of the Cosmic Microwave Background at large angular scales. The Short Wavelength Instrument for the Polarization Explorer (SWIPE) is composed of 3 arrays of multi-mode bolometers cooled at 0.3K , with optical components and filters cryogenically cooled below 4K to reduce the background on the detectors. Polarimetry is achieved by means of large rotating half-wave plates and wire-grid polarizers in front of the arrays. The polarization modulator is the first component of the optical chain, reducing significantly the effect of instrumental polarization. In SWIPE we trade angular resolution for sensitivity. The diameter of the entrance pupil of the refractive telescope is 45 cm, while the field optics is optimized to collect tens of modes for each detector, thus boosting the absorbed power. This approach results in a FWHM resolution of 1.8, 1.5, 1.2 degrees at 95, 145, 245 GHz respectively. The expected performance of the three channels is limited by photon noise, resulting in a final sensitivity around 0.1-0.2 μK per beam, for a 13 days survey covering 25% of the sky.
155. Effects of oxytocin and methacholine on cyclic nucleotide levels of rabbit myometrium
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Schlageter, N., primary, Janis, R. A., additional, Gualtieri, R. T., additional, and Hechter, O., additional
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- 1980
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156. ChemInform Abstract: SYNTHESIS OF OXYTOCIN USING IODINE FOR OXIDATIVE CYCLIZATION AND SILICA GEL ADSORPTION CHROMATOGRAPHY FOR PURIFICATION
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FLOURET, G., primary, TERADA, S., additional, KATO, T., additional, GUALTIERI, R., additional, and LIPKOWSKI, A., additional
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- 1979
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157. Unusual Vascular Malformation of the Kidney in Both Twins of a Monozygotic Pair: Short Case Report
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Mastroberardino, G., primary, Sciarra, A., additional, Gualtieri, R., additional, Di Fusco, C., additional, Grammatico, P., additional, and Del Porto, G., additional
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- 1987
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158. Serum myoglobin levels with latex-test in the acute phase of myocardial infarction
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DIMAIO, F, primary, TRAMBAIOLO, P, additional, SCORRETTI, M, additional, SCIARRA, A, additional, GUALTIERI, R, additional, SENZIO, A, additional, and SCIACCA, A, additional
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- 1986
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159. ANDROGEN METABOLISM IN A NEWBORN ANENCEPHALIC MONSTER
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Benagiano, G., primary, Ermini, M., additional, Gualtieri, R., additional, and Diczfalusy, E., additional
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- 1971
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160. Polystyrene nanoparticles may affect cell mitosis and compromise early embryo development in mammals.
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Barbato, V., Talevi, R., Gualtieri, R., Pallotta, M.M., Di Nardo, M., Costanzo, V., Catapano, G., and Capriglione, T.
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MAMMAL development , *MAMMALIAN embryos , *BIOLOGICAL systems , *BLASTOCYST , *POLYSTYRENE , *MITOSIS - Abstract
A great interest surrounds the development of nanoparticles (NPs) for biomedical applications such as drug delivery and cancer therapy. However, the interplay between nanoscale materials and biological systems and the associated hazards have not been completely clarified yet. In this study, bovine oviductal epithelial cells (BOECs) and embryos were used as in vitro models to investigate whether cell mitosis and early mammalian embryo development could be affected by the exposure to polystyrene (PS) nanoparticles. Analysis of the karyotype performed on BOECs exposed to PS-NPs did not show chromosomal anomalies compared to the control, although more tetraploid metaphase plates were observed in the former. In vitro fertilization experiments designed to understand whether exposure to PS-NPs could affect pre-implantation development showed that incubation with PS-NPs decreased 8-cell embryo and blastocyst rate in dose-dependent fashion. The quality of the blastocysts in terms of mean cell percent blastomeres with fragmented DNA was the same in exposed blastocysts compared to controls. These results show that the exposure to PS-NPs may impair development. In turn, this may affect the rate of mitosis in embryos and yield a lower developmental competence to reach the blastocyst stage. This suggests that release in the environment and the subsequent accumulation of PS-NPs into living organisms should be carefully monitored to prevent cytotoxic effects that may compromise their reproduction rates. • PS-NP treated BOEC showed a higher number of tetraploid metaphase plates compared to the CTRL. • 8-cell embryo and blastocyst rates were significantly compromised in a dose-dependent manner after incubation with PS-NPs. • PS-NP exposure did not affect blastocyst quality in terms of mean cell number percentages of blastomeres with fragmented DNA. • Our study suggests that PS-NP may compromise cleavage and affect embryos with a lower developmental competence. [ABSTRACT FROM AUTHOR]
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- 2020
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161. Large area TES spiderweb bolometer for multi-mode cavity microwave detect
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Holland, Wayne S., Zmuidzinas, Jonas, Biasotti, M., Bagliani, D., Ceriale, V., Corsini, D., De Bernardis, P., Gatti, F., Gualtieri, R., Lamagna, L., Masi, S., Pizzigoni, G., and Schillaci, A.
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- 2014
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162. Activated protein C resistance and Sneddon's syndrome.
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Gualtieri, R J and Walton, G D
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- 1999
163. Dynamic of pyroantimonate-detectable CA2+ increase at fertilization in D. Pictus
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Gualtieri, R., Campanella, C., and Andreuccetti, P.
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- 1990
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164. SWIPE Multi-mode Pixel Assembly Design and Beam Pattern Measurements at Cryogenic Temperature.
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Columbro, F., Madonia, P. G., Lamagna, L., Battistelli, E. S., Coppolecchia, A., de Bernardis, P., Gualtieri, R., Masi, S., Paiella, A., Piacentini, F., Presta, G., Biasotti, M., D'Alessandro, G., Gatti, F., Mele, L., and Siri, B.
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BOLOMETERS , *PIXELS , *TEMPERATURE measurements , *METAL mesh , *DESIGN , *ARTIFICIAL rubber , *DETECTORS - Abstract
In this paper, we present beam pattern tests performed on the SWIPE multi-mode bolometric detector pixel assembly. A 20-mm-aperture horn is coupled to a large detector absorber (10 mm diameter) with a TES sensor located on the side. The pixel assembly has been tested at the bolometer base temperature of 340 mK, inside a custom cryogenic test bed, looking at a Gunn oscillator (128 GHz) located in the far field. We developed a custom cryogenic neoprene absorber, in addition to the stack of standard metal meshes low-pass filters, to reduce the background on the detector at a level similar to the one expected in flight, allowing to measure the main beam of the pixel assembly. The measured FWHM is 21 ∘ , slightly narrower than the expected one (24 ∘ ), due to vignetting produced by the filters stack. [ABSTRACT FROM AUTHOR]
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- 2020
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165. Fertility preservation during the COVID-19 pandemic: mitigating the viral contamination risk to reproductive cells in cryostorage
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Riccardo Talevi, Prathima Tholeti, Shubhashree Uppangala, Satish Kumar Adiga, Guruprasad Kalthur, Roberto Gualtieri, Adiga, S. K., Tholeti, P., Uppangala, S., Kalthur, G., Gualtieri, R., and Talevi, R.
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Male ,0301 basic medicine ,media_common.quotation_subject ,Fertility ,Review ,Disease ,Biology ,Germ Cell ,Cryostorage risks ,03 medical and health sciences ,0302 clinical medicine ,Environmental health ,Pandemic ,Humans ,Cross-contamination ,Fertility preservation ,Pandemics ,Risk management ,media_common ,Oncofertility ,Cryostorage risk ,Cryopreservation ,Infection Control ,030219 obstetrics & reproductive medicine ,SARS-CoV-2 ,business.industry ,Transmission (medicine) ,Novelty ,COVID-19 ,Fertility Preservation ,Obstetrics and Gynecology ,Germ Cells ,030104 developmental biology ,Reproductive Medicine ,Equipment Contamination ,Female ,business ,Human ,Developmental Biology - Abstract
Reopening fertility care services across the world in the midst of a pandemic brings with it numerous concerns that need immediate addressing, such as the impact of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) on the male and female reproductive cells and the plausible risk of cross-contamination and transmission. Due to the novelty of the disease the literature contains few reports confirming an association of SARS-CoV-2 with reproductive tissues, gametes and embryos. Cryobanking, an essential service in fertility preservation, carries the risk of cross-contamination through cryogenic medium and thus calls for risk-mitigation strategies. This review aims to address the available literature on the presence of SARS-CoV-2 on tissues, gametes and embryos, with special reference to the possible sources of cross-contamination through liquid nitrogen. Strategies for risk mitigation have been extrapolated from reports dealing with other viruses to the current global crisis, for safety in fertility treatment services in general, and specifically for oncofertility.
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- 2020
166. CMB-S4
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Collaboration, The CMB-S4, Abazajian, Kevork, Addison, Graeme E., Adshead, Peter, Ahmed, Zeeshan, Akerib, Daniel, Ali, Aamir, Allen, Steven W., Alonso, David, Alvarez, Marcelo, Amin, Mustafa A., Anderson, Adam, Arnold, Kam S., Ashton, Peter, Baccigalupi, Carlo, Bard, Debbie, Barkats, Denis, Barron, Darcy, Barry, Peter S., Bartlett, James G., Thakur, Ritoban Basu, Battaglia, Nicholas, Bean, Rachel, Bebek, Chris, Bender, Amy N., Benson, Bradford A., Bianchini, Federico, Bischoff, Colin A., Bleem, Lindsey, Bock, James J., Bocquet, Sebastian, Boddy, Kimberly K., Bond, J. Richard, Borrill, Julian, Bouchet, François R., Brinckmann, Thejs, Brown, Michael L., Bryan, Sean, Buza, Victor, Byrum, Karen, Caimapo, Carlos Hervias, Calabrese, Erminia, Calafut, Victoria, Caldwell, Robert, Carlstrom, John E., Carron, Julien, Cecil, Thomas, Challinor, Anthony, Chang, Clarence L., Chinone, Yuji, Cho, Hsiao-Mei Sherry, Cooray, Asantha, Coulton, Will, Crawford, Thomas M., Crites, Abigail, Cukierman, Ari, Cyr-Racine, Francis-Yan, de Haan, Tijmen, Delabrouille, Jacques, Devlin, Mark, Di Valentino, Eleonora, Dierickx, Marion, Dobbs, Matt, Duff, Shannon, Dunkley, Jo, Dvorkin, Cora, Eimer, Joseph, Elleflot, Tucker, Errard, Josquin, Essinger-Hileman, Thomas, Fabbian, Giulio, Feng, Chang, Ferraro, Simone, Filippini, Jeffrey P., Flauger, Raphael, Flaugher, Brenna, Fraisse, Aurelien A., Frolov, Andrei, Galitzki, Nicholas, Gallardo, Patricio A., Galli, Silvia, Ganga, Ken, Gerbino, Martina, Gluscevic, Vera, Goeckner-Wald, Neil, Green, Daniel, Grin, Daniel, Grohs, Evan, Gualtieri, Riccardo, Gudmundsson, Jon E., Gullett, Ian, Gupta, Nikhel, Habib, Salman, Halpern, Mark, Halverson, Nils W., Hanany, Shaul, Harrington, Kathleen, Hasegawa, Masaya, Hasselfield, Matthew, Hazumi, Masashi, Heitmann, Katrin, Henderson, Shawn, Hensley, Brandon, Hill, Charles, Hill, J. Colin, Hlozek, Renée, Ho, Shuay-Pwu Patty, Hoang, Thuong, Holder, Gil, Holzapfel, William, Hood, John, Hubmayr, Johannes, Huffenberger, Kevin M., Hui, Howard, Irwin, Kent, Jeong, Oliver, Johnson, Bradley R., Jones, William C., Kang, Jae Hwan, Karkare, Kirit S., Katayama, Nobuhiko, Keskitalo, Reijo, Kisner, Theodore, Knox, Lloyd, Koopman, Brian J., Kosowsky, Arthur, Kovac, John, Kovetz, Ely D., Kuhlmann, Steve, Kuo, Chao-lin, Kusaka, Akito, Lähteenmäki, Anne, Lawrence, Charles R., Lee, Adrian T., Lewis, Antony, Li, Dale, Linder, Eric, Loverde, Marilena, Lowitz, Amy, Lubin, Phil, Madhavacheril, Mathew S., Mantz, Adam, Marques, Gabriela, Matsuda, Frederick, Mauskopf, Philip, McCarrick, Heather, McMahon, Jeffrey, Meerburg, P. Daniel, Melin, Jean-Baptiste, Menanteau, Felipe, Meyers, Joel, Millea, Marius, Mohr, Joseph, Moncelsi, Lorenzo, Monzani, Maria, Mroczkowski, Tony, Mukherjee, Suvodip, Nagy, Johanna, Namikawa, Toshiya, Nati, Federico, Natoli, Tyler, Newburgh, Laura, Niemack, Michael D., Nishino, Haruki, Nord, Brian, Novosad, Valentine, O'Brient, Roger, Padin, Stephen, Palladino, Steven, Partridge, Bruce, Petravick, Don, Pierpaoli, Elena, Pogosian, Levon, Prabhu, Karthik, Pryke, Clement, Puglisi, Giuseppe, Racine, Benjamin, Rahlin, Alexandra, Rao, Mayuri Sathyanarayana, Raveri, Marco, Reichardt, Christian L., Remazeilles, Mathieu, Rocha, Graca, Roe, Natalie A., Roy, Anirban, Ruhl, John E., Salatino, Maria, Saliwanchik, Benjamin, Schaan, Emmanuel, Schillaci, Alessandro, Schmitt, Benjamin, Schmittfull, Marcel M., Scott, Douglas, Sehgal, Neelima, Shandera, Sarah, Sherwin, Blake D., Shirokoff, Erik, Simon, Sara M., Slosar, Anze, Spergel, David, Germaine, Tyler St., Staggs, Suzanne T., Stark, Antony, Starkman, Glenn D., Stompor, Radek, Stoughton, Chris, Suzuki, Aritoki, Tajima, Osamu, Teply, Grant P., Thompson, Keith, Thorne, Ben, Timbie, Peter, Tomasi, Maurizio, Tristram, Matthieu, Tucker, Gregory, Umiltà, Caterina, van Engelen, Alexander, Vavagiakis, Eve M., Vieira, Joaquin D., Vieregg, Abigail G., Wagoner, Kasey, Wallisch, Benjamin, Wang, Gensheng, Watson, Scott, Westbrook, Ben, Whitehorn, Nathan, Wollack, Edward J., Wu, W. L. Kimmy, Xu, Zhilei, Yang, H. Y. Eric, Yasini, Siavash, Yefremenko, Volodymyr G., Yoon, Ki Won, Young, Edward, Yu, Cyndia, Zonca, Andrea, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Théorique - UMR CNRS 3681 (IPHT), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), CMB-S4, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Université Paris-Sud - Paris 11 (UP11), Apollo - University of Cambridge Repository, Van Swinderen Institute for Particle Physics and G, Cosmic Frontier, Abazajian, K, Addison, G, Adshead, P, Ahmed, Z, Akerib, D, Ali, A, Allen, S, Alonso, D, Alvarez, M, Amin, M, Anderson, A, Arnold, K, Ashton, P, Baccigalupi, C, Bard, D, Barkats, D, Barron, D, Barry, P, Bartlett, J, Basu Thakur, R, Battaglia, N, Bean, R, Bebek, C, Bender, A, Benson, B, Bianchini, F, Bischoff, C, Bleem, L, Bock, J, Bocquet, S, Boddy, K, Richard Bond, J, Borrill, J, Bouchet, F, Brinckmann, T, Brown, M, Bryan, S, Buza, V, Byrum, K, Hervias Caimapo, C, Calabrese, E, Calafut, V, Caldwell, R, Carlstrom, J, Carron, J, Cecil, T, Challinor, A, Chang, C, Chinone, Y, Sherry Cho, H, Cooray, A, Coulton, W, Crawford, T, Crites, A, Cukierman, A, Cyr-Racine, F, De Haan, T, Delabrouille, J, Devlin, M, Di Valentino, E, Dierickx, M, Dobbs, M, Duff, S, Dvorkin, C, Eimer, J, Elleflot, T, Errard, J, Essinger-Hileman, T, Fabbian, G, Feng, C, Ferraro, S, Filippini, J, Flauger, R, Flaugher, B, Fraisse, A, Frolov, A, Galitzki, N, Gallardo, P, Galli, S, Ganga, K, Gerbino, M, Gluscevic, V, Goeckner-Wald, N, Green, D, Grin, D, Grohs, E, Gualtieri, R, Gudmundsson, J, Gullett, I, Gupta, N, Habib, S, Halpern, M, Halverson, N, Hanany, S, Harrington, K, Hasegawa, M, Hasselfield, M, Hazumi, M, Heitmann, K, Henderson, S, Hensley, B, Hill, C, Colin Hill, J, Hlozek, R, Patty Ho, S, Hoang, T, Holder, G, Holzapfel, W, Hood, J, Hubmayr, J, Huffenberger, K, Hui, H, Irwin, K, Jeong, O, Johnson, B, Jones, W, Hwan Kang, J, Karkare, K, Katayama, N, Keskitalo, R, Kisner, T, Knox, L, Koopman, B, Kosowsky, A, Kovac, J, Kovetz, E, Kuhlmann, S, Kuo, C, Kusaka, A, Lahteenmaki, A, Lawrence, C, Lee, A, Lewis, A, Li, D, Linder, E, Loverde, M, Lowitz, A, Lubin, P, Madhavacheril, M, Mantz, A, Marques, G, Matsuda, F, Mauskopf, P, Mccarrick, H, Mcmahon, J, Daniel Meerburg, P, Melin, J, Menanteau, F, Meyers, J, Millea, M, Mohr, J, Moncelsi, L, Monzani, M, Mroczkowski, T, Mukherjee, S, Nagy, J, Namikawa, T, Nati, F, Natoli, T, Newburgh, L, Niemack, M, Nishino, H, Nord, B, Novosad, V, O'Brient, R, Padin, S, Palladino, S, Partridge, B, Petravick, D, Pierpaoli, E, Pogosian, L, Prabhu, K, Pryke, C, Puglisi, G, Racine, B, Rahlin, A, Sathyanarayana Rao, M, Raveri, M, Reichardt, C, Remazeilles, M, Rocha, G, Roe, N, Roy, A, Ruhl, J, Salatino, M, Saliwanchik, B, Schaan, E, Schillaci, A, Schmitt, B, Schmittfull, M, Scott, D, Sehgal, N, Shandera, S, Sherwin, B, Shirokoff, E, Simon, S, Slosar, A, Spergel, D, S, T, Staggs, S, Stark, A, Starkman, G, Stompor, R, Stoughton, C, Suzuki, A, Tajima, O, Teply, G, Thompson, K, Thorne, B, Timbie, P, Tomasi, M, Tristram, M, Tucker, G, Umilta, C, Van Engelen, A, Vavagiakis, E, Vieira, J, Vieregg, A, Wagoner, K, Wallisch, B, Wang, G, Watson, S, Westbrook, B, Whitehorn, N, Wollack, E, Kimmy Wu, W, Xu, Z, Eric Yang, H, Yasini, S, Yefremenko, V, Won Yoon, K, Young, E, Yu, C, Zonca, A, University of California Irvine, Johns Hopkins University, University of Illinois at Urbana-Champaign, SLAC National Accelerator Laboratory, University of California Berkeley, Stanford University, University of Oxford, Rice University, Fermi National Accelerator Laboratory, University of California San Diego, International School for Advanced Studies, Lawrence Berkeley National Laboratory, Harvard University, University of New Mexico, Argonne National Laboratory, Université Paris-Diderot, California Institute of Technology, Cornell University, University of Melbourne, University of Cincinnati, Ludwig Maximilian University of Munich, University of Toronto, UMR7095, Stony Brook University, University of Manchester, Arizona State University, Florida State University, Cardiff University, Dartmouth College, University of Geneva, University of Cambridge, The University of Tokyo, University of Groningen, University of Chicago, University of Pennsylvania, McGill University, National Institute of Standards and Technology, NASA Goddard Space Flight Center, University of Sussex, Princeton University, Simon Fraser University, National Institute for Nuclear Physics, Haverford College, Stockholm University, Case Western Reserve University, University of British Columbia, University of Colorado Boulder, University of Minnesota Twin Cities, University of Michigan, Ann Arbor, Simons Foundation, Columbia University, University of Virginia, University of California Davis, Yale University, University of Pittsburgh, Ben-Gurion University of the Negev, Department of Electronics and Nanoengineering, Jet Propulsion Laboratory, University of California Santa Barbara, Perimeter Institute for Theoretical Physics, Service d'Astrophysique CEA, European Southern Observatory, Washington University St. Louis, University of Milan - Bicocca, University of Southern California, Institute for Advanced Studies, Pennsylvania State University, Brookhaven National Laboratory, Kyoto University, University of Wisconsin-Madison, University of Milano, Université Paris-Saclay, Brown University, Syracuse University, University of California Los Angeles, Aalto-yliopisto, and Aalto University
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Astrophysics and Astronomy ,Cosmology and Nongalactic Astrophysics (astro-ph.CO) ,Cosmology, CMB ,Settore FIS/05 ,Space and Planetary Science ,astro-ph.CO ,FOS: Physical sciences ,Astronomy and Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] ,Galaxies and Cosmology ,Astrophysics - Cosmology and Nongalactic Astrophysics - Abstract
CMB-S4---the next-generation ground-based cosmic microwave background (CMB) experiment---is set to significantly advance the sensitivity of CMB measurements and enhance our understanding of the origin and evolution of the Universe, from the highest energies at the dawn of time through the growth of structure to the present day. Among the science cases pursued with CMB-S4, the quest for detecting primordial gravitational waves is a central driver of the experimental design. This work details the development of a forecasting framework that includes a power-spectrum-based semi-analytic projection tool, targeted explicitly towards optimizing constraints on the tensor-to-scalar ratio, $r$, in the presence of Galactic foregrounds and gravitational lensing of the CMB. This framework is unique in its direct use of information from the achieved performance of current Stage 2--3 CMB experiments to robustly forecast the science reach of upcoming CMB-polarization endeavors. The methodology allows for rapid iteration over experimental configurations and offers a flexible way to optimize the design of future experiments given a desired scientific goal. To form a closed-loop process, we couple this semi-analytic tool with map-based validation studies, which allow for the injection of additional complexity and verification of our forecasts with several independent analysis methods. We document multiple rounds of forecasts for CMB-S4 using this process and the resulting establishment of the current reference design of the primordial gravitational-wave component of the Stage-4 experiment, optimized to achieve our science goals of detecting primordial gravitational waves for $r > 0.003$ at greater than $5��$, or, in the absence of a detection, of reaching an upper limit of $r < 0.001$ at $95\%$ CL., 24 pages, 8 figures, 9 tables, submitted to ApJ. arXiv admin note: text overlap with arXiv:1907.04473
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- 2022
167. Dynamic Characterization of the Biomechanical Behaviour of Bovine Ovarian Cortical Tissue and Its Short-Term Effect on Ovarian Tissue and Follicles
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Riccardo Talevi, Giulia Pascoletti, Gionata Fragomeni, Roberto Gualtieri, Vincenza Barbato, Gerardo Catapano, Maddalena Di Nardo, Elisabetta M. Zanetti, Teresa Capriglione, Pascoletti, G., Di Nardo, M., Fragomeni, G., Barbato, V., Capriglione, T., Gualtieri, R., Talevi, R., Catapano, G., and Zanetti, E. M.
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Pathology ,medicine.medical_specialty ,Ovarian Cortex ,0206 medical engineering ,Biomechanic ,elastic modulus ,Ovary ,02 engineering and technology ,Biology ,lcsh:Technology ,Article ,creep ,biomechanics ,03 medical and health sciences ,Follicle ,0302 clinical medicine ,viscous behavior ,medicine ,General Materials Science ,lcsh:Microscopy ,Cell damage ,ovarian tissue ,Fixation (histology) ,lcsh:QC120-168.85 ,Hippo signaling pathway ,030219 obstetrics & reproductive medicine ,lcsh:QH201-278.5 ,lcsh:T ,Biomechanics ,tensile test ,Histology ,Creep ,Elastic modulus ,Ovarian tissue ,Tensile test ,Viscous behavior ,medicine.disease ,020601 biomedical engineering ,medicine.anatomical_structure ,lcsh:TA1-2040 ,lcsh:Descriptive and experimental mechanics ,lcsh:Electrical engineering. Electronics. Nuclear engineering ,Elastic modulu ,lcsh:Engineering (General). Civil engineering (General) ,lcsh:TK1-9971 - Abstract
The ovary is a dynamic mechanoresponsive organ. In vitro, tissue biomechanics was reported to affect follicle activation mainly through the Hippo pathway. Only recently, ovary responsiveness to mechanical signals was exploited for reproductive purposes. Unfortunately, poor characterization of ovarian cortex biomechanics and of the mechanical challenge hampers reproducible and effective treatments, and prevention of tissue damages. In this study the biomechanical response of ovarian cortical tissue from abattoir bovines was characterized for the first time. Ovarian cortical tissue fragments were subjected to uniaxial dynamic testing at frequencies up to 30 Hz, and at increasing average stresses. Tissue structure prior to and after testing was characterized by histology, with established fixation and staining protocols, to assess follicle quality and stage. Tissue properties largely varied with the donor. Bovine ovarian cortical tissue consistently exhibited a nonlinear viscoelastic behavior, with dominant elastic characteristics, in the low range of other reproductive tissues, and significant creep. Strain rate was independent of the applied stress. Histological analysis prior to and after mechanical tests showed that the short-term dynamic mechanical test used for the study did not cause significant tissue tear, nor follicle expulsion or cell damage.
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- 2020
168. Phthalates and Bisphenol A: presence in blood serum and follicular fluid of italian women undergoing assisted reproduction techniques
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Carola Conca Dioguardi, Gemma Fabozzi, Simona Ochetti, Lucia De Santis, Andrea Lenzi, Cinzia Racca, Francesco Botrè, Elena Sarcina, Elena Albani, Giovanna Tomasi, Rosanna Ciriminna, Valerio Pisaturo, Maria Giulia Minasi, Francesco Pallotti, Cristina Verlengia, Anna Pia Dima, Catello Scarica, Alessandro Conforti, Rita Villeggia, Laura Rienzi, Carlo Alviggi, Giuseppe Giuffrida, Federica Zullo, Donatella Paoli, F. Causio, Roberto Gualtieri, Paoli, D., Pallotti, F., Pia Dima, A., Albani, E., Alviggi, C., Causio, F., Conca Dioguardi, C., Conforti, A., Ciriminna, R., Fabozzi, G., Giuffrida, G., Gualtieri, R., Giulia Minasi, M., Ochetti, S., Pisaturo, V., Racca, C., Rienzi, L., Sarcina, E., Scarica, C., Tomasi, G., Verlengia, C., Villeggia, R., Zullo, F., Lenzi, A., Botre, F., and De Santis, L.
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Health, Toxicology and Mutagenesis ,media_common.quotation_subject ,010501 environmental sciences ,lcsh:Chemical technology ,Toxicology ,01 natural sciences ,Article ,Andrology ,03 medical and health sciences ,chemistry.chemical_compound ,Blood serum ,Follicular phase ,Medicine ,Endocrine system ,lcsh:TP1-1185 ,LC-MS/MS ,Ovarian reserve ,030304 developmental biology ,0105 earth and related environmental sciences ,media_common ,0303 health sciences ,phthalates ,Chemical Health and Safety ,business.industry ,BPA ,follicular fluid ,ART ,Phthalate ,Follicular fluid ,chemistry ,Folliculogenesis ,Reproduction ,business - Abstract
Background: folliculogenesis is a strictly regulated process that may be affected by endocrine disrupting chemicals (EDCs) through sometimes not so clear molecular mechanisms. Methods: we conducted a multicentric observational study involving six fertility centers across Italy, prospectively recruiting 122 women attending a fertility treatment. Recruited women had age ≤42 years, and normal ovarian reserve. Blood and follicular fluid samples were taken for EDCs measurement using liquid chromatography tandem mass spectrometry and each woman completed an epidemiological questionnaire. Results: The main EDCs found were monobutyl phthalate (MBP) (median blood: 8.96 ng/mL, follicular fluid 6.43 ng/mL), monoethylhexyl phthalate (MEHP) (median blood: 9.16 ng/mL, follicular fluid 7.68 ng/mL) and bisphenol A (BPA) (median blood: 1.89 ng/mL, follicular fluid 1.86 ng/mL). We found that serum MBP concentration was significantly associated with the considered area (p < 0.001, adj. mean: 7.61 ng/mL, 14.40 ng/mL, 13.56 ng/mL; Area 1: Milan–Turin, Area 2: Rome–Naples; Area 3: Catania–Bari, respectively) but negatively with home plastic food packaging (p = 0.004). Follicular MBP was associated with irregular cycles (p = 0.019). No association was detected between EDCs and eating habits and other clinical and epidemiological features. Conclusions: This study represents the first Italian biomonitoring of plastic EDCs in follicular fluid, laying the basis for future prospective evaluation on oocyte quality before assisted reproduction techniques (ART).
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- 2020
169. A new data logger based on Raspberry-Pi for Arctic Notostraca locomotion investigations
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R. Gualtieri, Giorgia D'Alessandro, Vittorio Pasquali, Fabio Leccese, Pasquali, V., D'Alessandro, Giorgia, Gualtieri, R., and Leccese, F.
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Locomotor activity ,Statistics and Probability ,0301 basic medicine ,Engineering ,Single-board computer ,Condensed Matter Physic ,Raspberry pi ,03 medical and health sciences ,0302 clinical medicine ,Notostraca ,Data logger ,Electrical and Electronic Engineering ,Instrumentation ,Remote sensing ,biology ,Data-logger ,business.industry ,Applied Mathematics ,I/O board ,Condensed Matter Physics ,biology.organism_classification ,030104 developmental biology ,Arctic ,Raspberry-Pi ,business ,030217 neurology & neurosurgery ,Computer hardware - Abstract
A new data logger based on Raspberry-Pi to monitor the locomotion of Arctic invertebrates has been made, tested and deployed in field. The device uses infrared sensors to check in vivo the invertebrates picking up the locomotor activity, data are collected for the analysis. Thanks to the Raspberry Pi capabilities and features, the instrument proved to be suitable for extreme scenarios such as the polar environment, offering good performances obtained at a very low price. Preliminary test made in field have demonstrated its reliability. Some experimental considerations and the trend of the biological rhythms of the tadpole shrimp’s locomotor activity are also discussed.
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- 2017
170. Serum myoglobin levels with latex-test in the acute phase of myocardial infarction
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Di Maio, F., Trambaiolo, P., Scorretti, M., Sciarra, A., Gualtieri, R., Senzio, A., and Sciacca, A.
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- 1986
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171. In vitro exposure to Clorphyrifos: effects on fertility and gene methylation pattern in Bos taurus spermatozoa
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M. M. Pallotta, V. Barbato, S. Braun, M. Di Nardo, A. Pinton, R. Gualtieri, R. Talevi, T. Capriglione, Pallotta, M. M., Barbato, V., Braun, S., Di Nardo, M., Pinton, A., Gualtieri, R., Talevi, R., and Capriglione, T.
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- 2017
172. Experimental in field reliability test for data logger based on Raspberry-Pi for extreme scenarios: A first step versus aerospace applications
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Marco Cagnetti, Giuseppe D'Alessandro, Vittorio Pasquali, R. Gualtieri, Fabio Leccese, IEEE, Pasquali, V., Gualtieri, R., D'Alessandro, G., Leccese, Fabio, and Cagnetti, Marco
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safety ,Engineering ,single-board computer ,data-logger ,I/O board ,Raspberry-Pi ,reliability ,aerospace engineering ,safety, risk, reliability and quality ,instrumentation ,Real-time computing ,02 engineering and technology ,Field (computer science) ,data-logger, I/O board, Raspberry-Pi, Reliability, single-board computer, Aerospace Engineering, Safety, Risk, Reliability and Quality, Instrumentation ,Raspberry pi ,03 medical and health sciences ,0302 clinical medicine ,Data logger ,0202 electrical engineering, electronic engineering, information engineering ,Instrumentation (computer programming) ,Aerospace ,Reliability (statistics) ,risk ,business.industry ,020208 electrical & electronic engineering ,reliability and quality ,Reliability engineering ,Test (assessment) ,Single-board computer ,business ,030217 neurology & neurosurgery - Abstract
A new inexpensive data logger specific designed to monitor the behavior of small animals in extreme scenario will be presented. The new data logger is based on common, commercial affordable and reliable devices that assure inexpensiveness and, at the same time, could be the base for further reasonings and developments with the aim to improve the device to face stressing scenarios such as that aerospace. Preliminary test realized in laboratory and in field have demonstrated its reliability.
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- 2016
173. Development of the multi-mode horn-lens configuration for the LSPE-SWIPE B-mode experiment
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Luca Lamagna, Stephen Legg, Giampaolo Pisano, Grazia Giuliani, T. Marchetti, Gabriele Coppi, R. Gualtieri, Bruno Maffei, Silvia Masi, Paolo de Bernardis, Zmuidzinas J.,Holland W.S., Legg, S, Lamagna, L, Coppi, G, De Bernardis, P, Giuliani, G, Gualtieri, R, Marchetti, T, Masi, S, Pisano, G, and Maffei, B
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Aperture ,Frequency band ,CMB ,01 natural sciences ,law.invention ,Telescope ,Lens ,Optics ,law ,0103 physical sciences ,Electronic ,Horn ,SWIPE ,Optical and Magnetic Materials ,Electrical and Electronic Engineering ,010306 general physics ,010303 astronomy & astrophysics ,Physics ,Geometrical optics ,business.industry ,Multi-mode ,Applied Mathematics ,B-mode ,LSPE ,Phase centre ,Electronic, Optical and Magnetic Materials ,Condensed Matter Physics ,Computer Science Applications1707 Computer Vision and Pattern Recognition ,Astrophysics::Instrumentation and Methods for Astrophysics ,Len ,Polarimeter ,Lens (optics) ,Wavelength ,Cardinal point ,business - Abstract
The Large Scale Polarisation Explorer (LSPE) is a balloon-borne experiment aiming to measure the B-mode component of the CMB polarisation at large angular scales. Onboard LSPE, the Short Wavelength Instrument for the Polarisation Explorer (SWIPE) is a bolometric polarimeter observing in three bands centred at 140, 220 and 240 GHz. The telescope is a single large-diameter plano-convex lens with a cold aperture stop. A small number of multi-mode feed horns feeding bolometric detectors are used within the focal plane, achieving a sensitivity equivalent to that of 100’s of single-mode horns. Simulations have been performed to predict the multi-mode optical response of the horn-lens configuration for centre and off-axis pixels pertaining to each frequency band. The horn has been simulated to a high accuracy using the Method of Moments. Using the horn simulation result as a source, the optical response of the lens has been examined using the more approximate simulation technique; Ray-Launching Geometrical Optics (RL-GO). Solution accuracy and simulation time depend heavily on the choice of RL-GO simulation parameters including: mesh size; the number of launched rays; and how densely the horn source beam is sampled. Individual convergence studies have been performed for each of these parameters and a final model has been obtained as a compromise between simulation time and accuracy. The instrumental polarisation of the lens is predicted to be at the -50 dB level. Finally, the optimal location of where to place the telescope focus in relation to the horn to maximise on-axis gain has been investigated. Several techniques agreed that the ‘phase centre’ is around 20 mm behind the horn aperture at 140 GHz, increasing to 30 mm at 220 and 240 GHz. Taking into account beam truncation effects caused by the finite size of the telescope was found to reduce the overall variation in on-axis gain.
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- 2016
174. Diritti fondamentali e cittadinanza dell’Unione dopo Lisbona
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CARTABIA, MARTA MARIA CARLA, Amato, G, Gualtieri, R, and Cartabia, M
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nd - Published
- 2013
175. Presentazione QUESTIONE ISTITUZIONALE E COSTRUZIONE DEL SISTEMA POLITICO DEMOCRATICO
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MONINA, Giancarlo, MONINA G, RICCI AG, ELIA L, GUERRIERI S, GUALTIERI R, DEGL'INNOCENTI M, PARLATO G, BLASBERG C, ORSINA G, BRESCHI D, TRUFFELLI M, GRASSI ORSINI F, BRUNI DM, GIORGI C, FIOCCO G, ROGGI P, SERGIO ML, GRAGLIA PS, MONINA G, and Monina, Giancarlo
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- 2007
176. Sul retroterra politico di Palmiro Togliatti. Note in margine alla formazione di un leader
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POMBENI, PAOLO, GUALTIERI R., SPAGNOLO C., TAVIANI E., and Pombeni P.
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COMUNISMO FRA LE DUE GUERRE ,TOGLIATTI PALMIRO - Abstract
La formazione politica di Togliatti fra le due guerre
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- 2007
177. L’URSS e il PCI nel sistema internazionale della guerra fredda
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PONS S, Gualtieri R, and Pons, S
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- 2001
178. Amoxicillin vs. placebo to reduce symptoms in children with group A streptococcal pharyngitis: a randomized, multicenter, double-blind, non-inferiority trial.
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Gualtieri R, Verolet C, Mardegan C, Papis S, Loevy N, Asner S, Rohr M, Llor J, Heininger U, Lacroix L, Pittet LF, and Posfay-Barbe KM
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- Humans, Female, Child, Double-Blind Method, Male, Child, Preschool, Adolescent, Treatment Outcome, Pharyngitis drug therapy, Pharyngitis microbiology, Amoxicillin therapeutic use, Streptococcal Infections drug therapy, Streptococcal Infections diagnosis, Anti-Bacterial Agents therapeutic use, Streptococcus pyogenes
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The efficacy of antibiotic therapy for group A streptococcus (GAS) pharyngitis is debated. The role of antibiotics in preventing complications seems limited, with the main potential benefit being symptom duration reduction. Our study aimed to evaluate whether a placebo is non-inferior to amoxicillin in reducing fever duration. We randomized 88 children between 3 and 15 years of age presenting with acute symptoms of pharyngitis and a positive rapid antigen detection test for GAS to receive 6-day treatment with either placebo (n = 46) or amoxicillin (n = 42). The primary outcome was the difference in fever duration, with a non-inferiority threshold set at 12 h. The secondary outcomes included pain intensity and complications of streptococcal pharyngitis. The mean difference in fever duration between the amoxicillin and placebo groups was 2.0 h (95% CI, - 8.3 to 12.3) in the per-protocol analysis and 2.8 h (95% CI, - 6.5 to 12.2) in the intention-to-treat analysis. Treatment failure was observed in six participants in the placebo group and two in the amoxicillin group (relative risk, 2.15; 95% CI, 0.44-10.57). All patients were identified early and recovered well. There was no clinically relevant difference in pain intensity between groups over the 7 days following randomization, with the largest difference of 0.5 (95% CI, - 0.62-1.80) observed on day 3., Conclusion: Placebo appears to be non-inferior to amoxicillin in reducing fever duration. Pain intensity and risk of complications were similar between the two groups. These findings support the restrictive antibiotic treatment for streptococcal pharyngitis., What Is Known: • Group A streptococcus pharyngitis is a common reason for prescribing antibiotics in pediatric care. • In high-income countries, while antibiotic treatment has not been effective in preventing non-suppurative complications, the primary justification for their use remains the reduction of symptoms., What Is New: • Our results suggest that antibiotics have a limited impact on the duration of fever and the intensity of pain in children with streptococcal pharyngitis. • Considering that suppurative complications can be promptly treated if they arise, we recommend a more judicious approach to antibiotic prescriptions., Trial Registration: The trial is registered at the US National Institutes of Health (ClinicalTrials.gov) # NCT03264911 on 15.08.2017., (© 2024. The Author(s).)
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- 2024
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179. Procedural sedation and analgesia in Swiss Pediatric Emergency Departments: a national subgroup analysis of a European cross-sectional survey.
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Romano F, Brändle G, Abplanalp-Marti O, Gualtieri R, and Sahyoun C
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- Child, Humans, Cross-Sectional Studies, Health Care Surveys, Hypnotics and Sedatives therapeutic use, Hypnotics and Sedatives administration & dosage, Practice Patterns, Physicians' statistics & numerical data, Switzerland, Analgesia methods, Analgesia statistics & numerical data, Conscious Sedation statistics & numerical data, Conscious Sedation methods, Emergency Service, Hospital statistics & numerical data, Pain Management methods, Pain Management statistics & numerical data
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This study aims to provide a national overview of procedural sedation and analgesia practices within Pediatric Emergency Departments in Switzerland, focusing on the availability of pharmacologic agents, the presence of safety protocols, the utilization of non-pharmacological interventions, and to identify specific local limitations. We conducted a detailed subgroup analysis of Swiss data from a European cross-sectional survey on emergency department pediatric Procedural Sedation and Analgesia (PSA) practice, isolating data from Swiss sites. The survey, conducted between November 2019 and March 2020, covered various aspects of procedural sedation and analgesia practices. The survey included nine Swiss sites, treating a total of 252,786 patients in 2019. Topical analgesia, inhaled equimolar nitrous oxide-oxygen mixture, and ketamine were largely available. All sites had nurse-directed triage protocols in place; however, opioid administration was included in the protocols in only 66% of sites. Only 33% of hospitals reported common use of intravenous sedation. Barriers to procedural sedation and analgesia implementation included staffing shortages (89% of sites) and lack of dedicated spaces (78%).Conclusions: Despite a broad array of pharmacological and options available in Swiss Pediatric Emergency Departments, challenges remain in standardizing practices across the country. Limited space and staffing and enhancing training on non-pharmacological interventions were identified as potential areas for improving pain and anxiety management in pediatric emergency care. This study underscores the need for national guidelines to harmonize emergency department PSA practices across Switzerland, ensuring all children have access to effective and evidence-based procedural comfort. What is Known: • Recent research, conducted in European emergency departments, suggests that in pediatric Procedural Sedation and Analgesia (PSA) resources are limited, and practice is heterogeneous What is New: • Swiss pediatric hospitals offer a wide range of pharmacological options for pain and anxiety management. However, significant barriers to PSA were identified. These include external control of intravenous sedation and insufficient integration of non-pharmacological interventions, such as child life specialists and procedural hypnosis. National guidelines are needed to harmonize PSA practices., (© 2024. The Author(s).)
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- 2024
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180. Epstein-Barr virus as promoter of Lemierre syndrome: systematic literature review.
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Delcò AA, Montorfani SMMA, Gualtieri R, Lava SAG, Milani GP, Bianchetti MG, Bronz G, Faré PB, and Kottanattu L
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- Humans, Herpesvirus 4, Human genetics, Female, Lemierre Syndrome diagnosis, Lemierre Syndrome complications, Epstein-Barr Virus Infections complications
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Purpose: To investigate a possible link between acute Epstein-Barr virus infection and Lemierre syndrome, a rare yet life-threatening infection., Methods: A systematic review was conducted adhering to the 2020 Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Diagnosis criteria for Lemierre syndrome were established, and data extraction encompassed demographic data, clinical, and laboratory information., Results: Out of 985 initially identified papers, 132 articles were selected for the final analysis. They reported on 151 cases of Lemierre syndrome (76 female and 75 male patients with a median of 18 years) alongside interpretable results for Epstein-Barr virus serology. Among these, 38 cases (25%) tested positive for acute Epstein-Barr virus serology. There were no differences in terms of age, sex, or Fusobacterium presence between the serologically positive and negative groups. Conversely, instances of cervical thrombophlebitis and pulmonary complications were significantly higher (P = 0.0001) among those testing negative. The disease course was lethal in one case for each of the two groups., Conclusions: This analysis provides evidence of an association between acute Epstein-Barr virus infection and Lemierre syndrome. Raising awareness of this link within the medical community is desirable., (© 2024. The Author(s).)
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- 2024
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181. Artificial Intelligence in the Diagnosis and Management of Appendicitis in Pediatric Departments: A Systematic Review.
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Rey R, Gualtieri R, La Scala G, and Posfay Barbe K
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- Humans, Child, Algorithms, Appendicitis diagnosis, Appendicitis surgery, Artificial Intelligence
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Introduction: Artificial intelligence (AI) is a growing field in medical research that could potentially help in the challenging diagnosis of acute appendicitis (AA) in children. However, usefulness of AI in clinical settings remains unclear. Our aim was to assess the accuracy of AIs in the diagnosis of AA in the pediatric population through a systematic literature review., Methods: PubMed, Embase, and Web of Science were searched using the following keywords: "pediatric," "artificial intelligence," "standard practices," and "appendicitis," up to September 2023. The risk of bias was assessed using PROBAST., Results: A total of 302 articles were identified and nine articles were included in the final review. Two studies had prospective validation, seven were retrospective, and no randomized control trials were found. All studies developed their own algorithms and had an accuracy greater than 90% or area under the curve >0.9. All studies were rated as a "high risk" concerning their overall risk of bias., Conclusion: We analyzed the current status of AI in the diagnosis of appendicitis in children. The application of AI shows promising potential, but the need for more rigor in study design, reporting, and transparency is urgent to facilitate its clinical implementation., Competing Interests: None declared., (Thieme. All rights reserved.)
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- 2024
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182. First Constraints on the Epoch of Reionization Using the Non-Gaussianity of the Kinematic Sunyaev-Zel'dovich Effect from the South Pole Telescope and Herschel-SPIRE Observations.
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Raghunathan S, Ade PAR, Anderson AJ, Ansarinejad B, Archipley M, Austermann JE, Balkenhol L, Beall JA, Benabed K, Bender AN, Benson BA, Bianchini F, Bleem LE, Bock J, Bouchet FR, Bryant L, Camphuis E, Carlstrom JE, Cecil TW, Chang CL, Chaubal P, Chiang HC, Chichura PM, Chou TL, Citron R, Coerver A, Crawford TM, Crites AT, Cukierman A, Daley C, Dibert KR, Dobbs MA, Doussot A, Dutcher D, Everett W, Feng C, Ferguson KR, Fichman K, Foster A, Galli S, Gallicchio J, Gambrel AE, Gardner RW, Ge F, George EM, Goeckner-Wald N, Gualtieri R, Guidi F, Guns S, Gupta N, de Haan T, Halverson NW, Hivon E, Holder GP, Holzapfel WL, Hood JC, Hrubes JD, Hryciuk A, Huang N, Hubmayr J, Irwin KD, Kéruzoré F, Khalife AR, Knox L, Korman M, Kornoelje K, Kuo CL, Lee AT, Levy K, Li D, Lowitz AE, Lu C, Maniyar A, Martsen ES, McMahon JJ, Menanteau F, Millea M, Montgomery J, Corbett Moran C, Nakato Y, Natoli T, Nibarger JP, Noble GI, Novosad V, Omori Y, Padin S, Pan Z, Paschos P, Patil S, Phadke KA, Prabhu K, Pryke C, Quan W, Rahimi M, Rahlin A, Reichardt CL, Rouble M, Ruhl JE, Saliwanchik BR, Schaffer KK, Schiappucci E, Sievers C, Smecher G, Sobrin JA, Stark AA, Stephen J, Suzuki A, Tandoi C, Thompson KL, Thorne B, Trendafilova C, Tucker C, Umilta C, Veach T, Vieira JD, Viero MP, Wan Y, Wang G, Whitehorn N, Wu WLK, Yefremenko V, Young MR, Zebrowski JA, and Zemcov M
- Abstract
We report results from an analysis aimed at detecting the trispectrum of the kinematic Sunyaev-Zel'dovich (kSZ) effect by combining data from the South Pole Telescope (SPT) and Herschel-SPIRE experiments over a 100 deg^{2} field. The SPT observations combine data from the previous and current surveys, namely SPTpol and SPT-3G, to achieve depths of 4.5, 3, and 16 μK-arcmin in bands centered at 95, 150, and 220 GHz. For SPIRE, we include data from the 600 and 857 GHz bands. We reconstruct the velocity-induced large-scale correlation of the small-scale kSZ signal with a quadratic estimator that uses two cosmic microwave background (CMB) temperature maps, constructed by optimally combining data from all the frequency bands. We reject the null hypothesis of a zero trispectrum at 10.3σ level. However, the measured trispectrum contains contributions from both the kSZ and other undesired components, such as CMB lensing and astrophysical foregrounds, with kSZ being sub-dominant. We use the agora simulations to estimate the expected signal from CMB lensing and astrophysical foregrounds. After accounting for the contributions from CMB lensing and foreground signals, we do not detect an excess kSZ-only trispectrum and use this nondetection to set constraints on reionization. By applying a prior based on observations of the Gunn-Peterson trough, we obtain an upper limit on the duration of reionization of Δz_{re,50}<4.5 (95% confidence level). We find these constraints are fairly robust to foregrounds assumptions. This trispectrum measurement is independent of, but consistent with, Planck's optical depth measurement. This result is the first constraint on the epoch of reionization using the non-Gaussian nature of the kSZ signal.
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- 2024
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183. Long-term persistence of seroprotection against measles following measles-mumps-rubella vaccination administered before and after pediatric liver transplantation.
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Pittet LF, Gualtieri R, Verolet CM, L'Huillier AG, Wildhaber BE, McLin VA, and Posfay-Barbe KM
- Abstract
Liver transplantation (LT) recipients are susceptible to infections, including measles. Concerns about the safety and efficacy of live-attenuated vaccines, such as the measles-mumps-rubella (MMR) vaccine, have led to hesitancy among providers in administering them to immunocompromised patients. This 9-year interventional study assessed seroprotection against measles following MMR vaccination in pediatric LT recipients. Of 119 participants enrolled, 60 (50%) were seroprotected against measles after transplantation. Among the 59 nonseroprotected participants, 56 fulfilled safety criteria and received MMR vaccination with a seroprotection rate of 90% (95% confidence interval [CI], 73%-98%) after a first dose, 95% (95% CI, 85%-99%) after primary vaccination with 1 to 3 doses, comparable to nonimmunocompromized populations. However, measles antibodies declined over time, suggesting the need for regular monitoring, and booster doses. Half of the vaccinees (26/53, 49%) subsequently lost seroprotection. Among them, 23 received additional doses of MMR, with a high seroconversion rate. At their last follow-up (median, 6.1 years; interquartile range, 3.0-8.1 after inclusion), 63% (95% CI, 49%-75%) of all vaccinees were seroprotected against measles. In conclusion, MMR vaccination in pediatric LT recipients offers seroprotection against measles, but long-term immunity should be monitored closely., Competing Interests: Declaration of competing interest The authors of this manuscript have no conflicts of interest to disclose as described by the American Journal of Transplantation., (Copyright © 2024 The Author(s). Published by Elsevier Inc. All rights reserved.)
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- 2024
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184. In Vitro Culture of Mammalian Embryos: Is There Room for Improvement?
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Gualtieri R, De Gregorio V, Candela A, Travaglione A, Genovese V, Barbato V, and Talevi R
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- Animals, Humans, Embryonic Development, Pregnancy, Female, Blastocyst cytology, Blastocyst metabolism, Embryo Culture Techniques methods, Embryo, Mammalian cytology
- Abstract
Preimplantation embryo culture, pivotal in assisted reproductive technology (ART), has lagged in innovation compared to embryo selection advancements. This review examines the persisting gap between in vivo and in vitro embryo development, emphasizing the need for improved culture conditions. While in humans this gap is hardly estimated, animal models, particularly bovines, reveal clear disparities in developmental competence, cryotolerance, pregnancy and live birth rates between in vitro-produced (IVP) and in vivo-derived (IVD) embryos. Molecular analyses unveil distinct differences in morphology, metabolism, and genomic stability, underscoring the need for refining culture conditions for better ART outcomes. To this end, a deeper comprehension of oviduct physiology and embryo transport is crucial for grasping embryo-maternal interactions' mechanisms. Research on autocrine and paracrine factors, and extracellular vesicles in embryo-maternal tract interactions, elucidates vital communication networks for successful implantation and pregnancy. In vitro, confinement, and embryo density are key factors to boost embryo development. Advanced dynamic culture systems mimicking fluid mechanical stimulation in the oviduct, through vibration, tilting, and microfluidic methods, and the use of innovative softer substrates, hold promise for optimizing in vitro embryo development.
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- 2024
- Full Text
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185. Assessing vaccine-induced immunity against pneumococcus, hepatitis A and B over a 9-year follow-up in pediatric liver transplant recipients: A nationwide retrospective study.
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Gold T, Gualtieri R, Posfay-Barbe K, Wildhaber BE, McLin V, and Blanchard-Rohner G
- Subjects
- Humans, Retrospective Studies, Male, Female, Follow-Up Studies, Child, Child, Preschool, Hepatitis A Vaccines immunology, Hepatitis A Vaccines administration & dosage, Adolescent, Infant, Streptococcus pneumoniae immunology, Prognosis, Vaccination, Transplant Recipients, Hepatitis A virus immunology, Postoperative Complications immunology, Liver Transplantation, Hepatitis B prevention & control, Hepatitis B immunology, Hepatitis A immunology, Hepatitis A prevention & control, Hepatitis B Vaccines immunology, Hepatitis B Vaccines administration & dosage, Hepatitis B virus immunology, Pneumococcal Infections prevention & control, Pneumococcal Infections immunology
- Abstract
Pediatric liver transplant recipients are particularly at risk of infections. The most cost-effective way to prevent infectious complications is through vaccination, which can potentially prevent infections due to hepatitis B (HBV) virus, hepatitis A virus (HAV), and invasive pneumococcal diseases. Here, we performed a retrospective analysis of HBV, HAV, and pneumococcal immunity in pediatric liver transplant recipients between January 1, 2009, and December 31, 2020, to collect data on immunization and vaccine serology. A total of 94% (58/62) patients had available vaccination records. At transplant, 90% (45/50) were seroprotected against HBV, 63% (19/30) against HAV, and 78% (18/23) had pneumococcal immunity, but immunity against these 3 pathogens remained suboptimal during the 9-year follow-up. A booster vaccine was administered to only 20% to 40% of patients. Children who had received >4 doses of HBV vaccine and > 2 doses of HAV vaccine pretransplant displayed a higher overall seroprotection over time post-solid organ transplant. Our findings suggest that a serology-based approach should be accompanied by a more systematic follow-up of vaccination, with special attention paid to patients with an incomplete vaccination status at time of transplant., (Copyright © 2023 American Society of Transplantation & American Society of Transplant Surgeons. Published by Elsevier Inc. All rights reserved.)
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- 2024
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186. Individually Cultured Bovine Zygotes Successfully Develop to the Blastocyst Stage in an Extremely Confined Environment.
- Author
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Travaglione A, Candela A, De Gregorio V, Genovese V, Cimmino M, Barbato V, Talevi R, and Gualtieri R
- Subjects
- Animals, Cattle, Female, Mitochondria metabolism, Blastocyst cytology, Blastocyst metabolism, Zygote cytology, Zygote metabolism, Embryo Culture Techniques methods, Embryonic Development
- Abstract
The possibility of detecting the developmental competence of individually cultured embryos through analysis of spent media is a major current trend in an ART setting. However, individual embryo culture is detrimental compared with high-density group culture due to the reduced concentration of putative embryotropins. The main aim of this study was to identify an individual culture system that is not detrimental over high-density group culture in the bovine model. Blastocyst rates and competence were investigated in a conventional (GC) group, semi-confined group (MG), and individual culture (MS) in a commercial microwell device. Main findings showed that: (1) individual embryos can be continuously cultured for 7 days in ~70 nL microwells (MS) without detrimental effects compared with the GC and MG; (2) MS and MG blastocysts had a reduced number of TUNEL-positive cells compared to GC blastocysts; (3) though blastocyst mean cell numbers, mitochondrial activity, and lipid content were not different among the three culture conditions, MS blastocysts had a higher frequency of small-sized lipid droplets and a reduced mean droplet diameter compared with GC and MG blastocysts. Overall, findings open the way to optimize the development and competence of single embryos in an ART setting.
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- 2024
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187. Rituximab-to-vaccine interval on SARS-CoV-2 immunogenicity in children: The potential role of prior natural infection.
- Author
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Gualtieri R, Yerly S, Garcia-Tarodo S, Parvex P, Rock N, Posfay-Barbe K, Didierlaurent AM, Eberhardt C, and Blanchard-Rohner G
- Subjects
- Humans, Child, Female, Male, Adolescent, Child, Preschool, Prospective Studies, Immunogenicity, Vaccine, Spike Glycoprotein, Coronavirus immunology, Rituximab therapeutic use, COVID-19 immunology, COVID-19 prevention & control, SARS-CoV-2 immunology, Antibodies, Viral blood, COVID-19 Vaccines immunology
- Abstract
Background: Treatment with anti-CD20 antibodies (rituximab) is used in both adults and children to treat various autoimmune and oncological diseases. Rituximab depletes B CD20+ cells and, thereby, antibody response to vaccines. This study aimed to examine the antibody response to mRNA-based COVID-19 vaccines in children aged 5-18 years undergoing rituximab treatment compared to healthy matched children., Methods: Between 31 January and 18 July 2022, we conducted a prospective observational study at the Geneva University Hospitals, enrolling children aged 5-18 years under rituximab treatment who had received two mRNA-based SARS-CoV-2 vaccine doses. Controls were healthy volunteers with no significant medical conditions. Exclusion criteria included a recent SARS-CoV-2 infection. Blood samples were collected at day 60 (±30) and day 270 (±90) after the second vaccination., Results: The rituximab-treated group exhibited significantly lower levels of antibodies specific to the anti-receptor binding domain (RBD) of the SARS-CoV-2 spike (S) protein than healthy controls at 60 (±30) days after the second vaccine dose (geometric mean concentration: 868.3 IU/mL in patients and 11,393 IU/mL in controls; p = .008). However, patients with a rituximab-to-vaccine interval shorter than 6 months and with evidence of a past infection (based on positive anti-N antibody levels) had a high level of anti-RBD antibodies., Conclusion: A past infection with SARS-CoV-2 may induce anti-RBD-specific memory B cells that can be re-activated by SARS-CoV-2 vaccination, even after rituximab-induced B-cell depletion. This suggests that it is possible to vaccinate earlier than 6 months after rituximab to develop a good antibody response, especially in the case of past SARS-CoV-2 infection., (© 2024 The Author(s). Pediatric Allergy and Immunology published by European Academy of Allergy and Clinical Immunology and John Wiley & Sons Ltd.)
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- 2024
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188. Vaccine Immunity and Immune Reconstitution in Children After Hematopoietic Stem Cell Transplantation: A Retrospective Single-center Study.
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Gualtieri R, Bernard F, Posfay-Barbe K, and Blanchard-Rohner G
- Subjects
- Child, Humans, Retrospective Studies, Immune Reconstitution, Hematopoietic Stem Cell Transplantation adverse effects, Vaccines
- Abstract
Competing Interests: The authors declare no conflict of interest.
- Published
- 2024
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189. Acute Aseptic Meningitis Temporally Associated with Intravenous Polyclonal Immunoglobulin Therapy: A Systematic Review.
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De Felice ELT, Toti GF, Gatti B, Gualtieri R, Camozzi P, Lava SAG, Milani GP, Treglia G, Vanoni F, Bianchetti MG, Bernasconi GF, Terziroli Beretta Piccoli B, and Lavagno C
- Subjects
- Humans, Acute Disease, Child, Adolescent, Pharmacovigilance, Child, Preschool, Immunization, Passive methods, Meningitis, Aseptic diagnosis, Meningitis, Aseptic etiology, Meningitis, Aseptic therapy, Immunoglobulins, Intravenous therapeutic use, Immunoglobulins, Intravenous adverse effects, Immunoglobulins, Intravenous administration & dosage
- Abstract
An acute aseptic meningitis has been occasionally observed on intravenous polyclonal human immunoglobulin therapy. Since case reports cannot be employed to draw inferences about the relationships between immunoglobulin therapy and meningitis, we conducted a systematic review and meta-analysis of the literature. Eligible were cases, case series, and pharmacovigilance studies. We found 71 individually documented cases (36 individuals ≤ 18 years of age) of meningitis. Ninety percent of cases presented ≤ 3 days after initiating immunoglobulin therapy and recovered within ≤ 7 days (with a shorter disease duration in children: ≤ 3 days in 29 (94%) cases). In 22 (31%) instances, the authors noted a link between the onset of meningitis and a rapid intravenous infusion of immunoglobulins. Cerebrospinal fluid analysis revealed a predominantly neutrophilic (N = 46, 66%) pleocytosis. Recurrences after re-exposure were observed in eight (N = 11%) patients. Eight case series addressed the prevalence of meningitis in 4089 patients treated with immunoglobulins. A pooled prevalence of 0.6% was noted. Finally, pharmacovigilance data revealed that meningitis temporally associated with intravenous immunoglobulin therapy occurred with at least five different products. In conclusion, intravenous immunoglobulin may cause an acute aseptic meningitis. The clinical features remit rapidly after discontinuing the medication., (© 2024. The Author(s).)
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- 2024
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190. Enhanced solute transport and steady mechanical stimulation in a novel dynamic perifusion bioreactor increase the efficiency of the in vitro culture of ovarian cortical tissue strips.
- Author
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Fragomeni G, De Napoli L, De Gregorio V, Genovese V, Barbato V, Serratore G, Morrone G, Travaglione A, Candela A, Gualtieri R, Talevi R, and Catapano G
- Abstract
Introduction: We report the development and preliminary evaluation of a novel dynamic bioreactor to culture ovarian cortical tissue strips that leverages tissue response to enhanced oxygen transport and adequate mechanical stimulation. In vitro multistep ovarian tissue static culture followed by mature oocyte generation, fertilization, and embryo transfer promises to use the reserve of dormant follicles. Unfortunately, static in vitro culture of ovarian tissue does not promote development of primordial to secondary follicles or sustain follicle viability and thereby limits the number of obtainable mature oocytes. Enhancing oxygen transport to and exerting mechanical stimulation on ovarian tissue in a dynamic bioreactor may more closely mimic the physiological microenvironment and thus promote follicle activation, development, and viability. Materials and Methods: The most transport-effective dynamic bioreactor design was modified using 3D models of medium and oxygen transport to maximize strip perifusion and apply tissue fluid dynamic shear stresses and direct compressive strains to elicit tissue response. Prototypes of the final bioreactor design were manufactured with materials of varying cytocompatibility and assessed by testing the effect of leachables on sperm motility. Effectiveness of the bioreactor culture was characterized against static controls by culturing fresh bovine ovarian tissue strips for 7 days at 4.8 × 10
-5 m/s medium filtration flux in air at -15% maximal total compressive strain and by assessing follicle development, health, and viability. Results and Conclusions: Culture in dynamic bioreactors promoted effective oxygen transport to tissues and stimulated tissues with strains and fluid dynamic shear stresses that, although non-uniform, significantly influenced tissue metabolism. Tissue strip culture in bioreactors made of cytocompatible polypropylene preserved follicle viability and promoted follicle development better than static culture, less so in bioreactors made of cytotoxic ABS-like resin., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2024 Fragomeni, De Napoli, De Gregorio, Genovese, Barbato, Serratore, Morrone, Travaglione, Candela, Gualtieri, Talevi and Catapano.)- Published
- 2024
- Full Text
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191. Transient heart tamponade by bullous necrotizing pneumonia.
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Piastra M, Paradiso FV, Nanni L, Gualtieri R, Ferrari V, Picconi E, Morena TC, Conti G, and De Rosa G
- Subjects
- Humans, Pneumonia, Necrotizing complications, Pneumonia, Necrotizing diagnostic imaging, Pneumonia, Necrotizing drug therapy, Cardiac Tamponade
- Published
- 2024
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192. Vaccine Immunity in Children After Hematologic Cancer Treatment: A Retrospective Single-center Study.
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Cetin M, Gumy-Pause F, Gualtieri R, Posfay-Barbe KM, and Blanchard-Rohner G
- Subjects
- Child, Humans, Infant, Retrospective Studies, Tetanus prevention & control, Diphtheria prevention & control, Chickenpox, Diphtheria-Tetanus-acellular Pertussis Vaccines, Hematologic Neoplasms, Hepatitis B, Neoplasms drug therapy, Measles
- Abstract
Background: Children lose their vaccine-induced protection and are particularly vulnerable to vaccine-preventable diseases after chemotherapy. However, revaccination guidelines are heterogeneous, and there is often a lack of revaccination post-treatment., Aims: We conducted a retrospective study of children with hematologic cancer to evaluate vaccine immunity before and after the end of treatment and to determine whether the current institutional revaccination program based on vaccine serology results was followed and effective., Materials and Methods: Data of all children treated by chemotherapy between April 2015 and July 2021 were extracted from hospital medical records for analysis. Serum antibody levels and time of vaccination were evaluated for diphtheria, tetanus, Streptococcus pneumoniae , Haemophilus influenzae type b (Hib), measles, varicella, and hepatitis B., Results: We included 31 patients (median age, 9 years). At cancer diagnosis, 90% of children were protected against tetanus, diphtheria, and measles; 65% to 67% were protected against pneumococcus and varicella; and 25% against hepatitis B. At the end of chemotherapy, 67% to 71% of patients were protected against tetanus, varicella, and measles; 40% remained protected against hepatitis B; and 27% to 33% against pneumococcus and diphtheria. Patients were revaccinated at various times after the end of treatment but not systematically. During the first-year post-treatment, 20% to 25% of children remained unprotected against pneumococcus, measles, and hepatitis B, one third against diphtheria, but all were protected against tetanus and varicella., Conclusions: An effective individualized vaccination program post-cancer based on serology results should be accompanied by an appropriate serology tracking method and follow-up to assess if booster doses are necessary. Our study supports vaccinating all children with a dose of the 13-valent pneumococcal conjugate at cancer diagnosis and at 3 months post-treatment with the combined diphtheria-tetanus-acellular pertussis/poliomyelitis vaccine/hepatitis B virus plus or minus Hib and 13-valent pneumococcal conjugate and meningococcal vaccine, including measles/mumps/rubella-varicella zoster virus vaccine if good immune reconstitution is present., Competing Interests: The authors declare no conflict of interest., (Copyright © 2023 The Author(s). Published by Wolters Kluwer Health, Inc.)
- Published
- 2024
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193. Impact of prepubertal bovine ovarian tissue pre-freeze holding duration on follicle quality.
- Author
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Amonkar DDB, Genovese V, De Gregorio V, Travaglione A, Uppangala S, Vani Lakshmi R, Kalthur G, Gualtieri R, Talevi R, and Adiga SK
- Subjects
- Female, Animals, Cattle, Humans, Infant, Freezing, Ovary pathology, Cryopreservation veterinary, Cryopreservation methods, Ovarian Follicle, Fertility Preservation methods
- Abstract
Ovarian tissue cryopreservation prior to gonadotoxic treatment is the only recommended option for fertility preservation in prepubertal girls. Due to the technical complexity of this technique, limited number of centres across the world are equipped to offer the facility. Hence, the retrieved ovarian tissue needs to be maintained at hypothermic temperature (4 °C) for long time during shipment. The time taken between tissue retrieval and cryopreservation could influence the functionality of cells during fertility restoration. This study explored the tissue integrity and follicle quality of ovarian cortical slices subjected to pre-freeze holding for various time durations in vitro. Prepubertal bovine ovarian tissue from < 12 months old animals were handled at hypothermic holding (4 °C) for 0, 24, 48 and 72 h. The tissues were assessed for follicle viability through confocal analysis of live-dead labelled samples, and follicle quality and tissue integrity through histology. Results have shown that follicle viability, and overall follicle quality were not significantly affected at the end of 72 h hypothermic holding. Though, the observation reassures extended hypothermic holding prior to freezing, findings need to be validated in human tissue prior to use in clinical fertility preservation programs., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Society for Biology of Reproduction & the Institute of Animal Reproduction and Food Research of Polish Academy of Sciences in Olsztyn. Published by Elsevier B.V. All rights reserved.)
- Published
- 2023
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194. Dynamic in vitro culture of bovine and human ovarian tissue enhances follicle progression and health.
- Author
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Barbato V, Genovese V, De Gregorio V, Di Nardo M, Travaglione A, De Napoli L, Fragomeni G, Zanetti EM, Adiga SK, Mondrone G, D'Hooghe T, Zheng W, Longobardi S, Catapano G, Gualtieri R, and Talevi R
- Subjects
- Female, Humans, Animals, Cattle, Oogenesis, Oocytes, Tissue Culture Techniques, Ovarian Follicle, Ovary
- Abstract
In vitro ovarian cortical tissue culture, followed by culture of isolated secondary follicles, is a promising future option for production of mature oocytes. Although efforts have been made to improve the culture outcome by changing the medium composition, so far, most studies used static culture systems. Here we describe the outcome of 7 days cultures of bovine and human ovarian cortical tissue in a dynamic system using a novel perifusion bioreactor in comparison to static culture in conventional and/or gas permeable dishes. Findings show that dynamic culture significantly improves follicle quality and viability, percentage and health of secondary follicles, overall tissue health, and steroid secretion in both species. Model predictions suggest that such amelioration can be mediated by an enhanced oxygen availability and/or by fluid-mechanical shear stresses and solid compressive strains exerted on the tissue., (© 2023. The Author(s).)
- Published
- 2023
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195. Estimated Prevalence and Testing for Albuminuria in US Adults at Risk for Chronic Kidney Disease.
- Author
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Chu CD, Xia F, Du Y, Singh R, Tuot DS, Lamprea-Montealegre JA, Gualtieri R, Liao N, Kong SX, Williamson T, Shlipak MG, and Estrella MM
- Subjects
- Adult, Aged, Female, Humans, Male, Middle Aged, Cohort Studies, Diabetes Mellitus epidemiology, Hypertension epidemiology, Prevalence, Risk Assessment, United States epidemiology, Albuminuria diagnosis, Albuminuria epidemiology, Diagnostic Techniques and Procedures statistics & numerical data, Renal Insufficiency, Chronic diagnosis, Renal Insufficiency, Chronic epidemiology, Renal Insufficiency, Chronic therapy
- Abstract
Importance: Albuminuria testing is crucial for guiding evidence-based treatments to mitigate chronic kidney disease (CKD) progression and cardiovascular morbidity, but it is widely underutilized among persons with or at risk for CKD., Objective: To estimate the extent of albuminuria underdetection from lack of testing and evaluate its association with CKD treatment in a large US cohort of patients with hypertension or diabetes., Design, Setting, and Participants: This cohort study examined adults with hypertension or diabetes, using data from the 2007 to 2018 National Health and Nutrition Examination Surveys (NHANES) and the Optum deidentified electronic health record (EHR) data set of diverse US health care organizations. Analyses were conducted from October 31, 2022, to May 19, 2023., Main Outcomes and Measures: Using NHANES as a nationally representative sample, a logistic regression model was developed to estimate albuminuria (urine albumin-creatinine ratio ≥30 mg/g). This model was then applied to active outpatients in the EHR from January 1, 2017, to December 31, 2018. The prevalence of albuminuria among those with and without albuminuria testing during this period was estimated. A multivariable logistic regression was used to examine associations between having albuminuria testing and CKD therapies within the subsequent year (prescription for angiotensin-converting enzyme inhibitor [ACEi] or angiotensin II receptor blocker [ARB], prescription for sodium-glucose cotransporter 2 inhibitor [SGLT2i], and blood pressure control to less than 130/80 mm Hg or less than 140/90 mm Hg on the latest outpatient measure)., Results: The total EHR study population included 192 108 patients (mean [SD] age, 60.3 [15.1] years; 185 589 [96.6%] with hypertension; 50 507 [26.2%] with diabetes; mean [SD] eGFR, 84 [21] mL/min/1.73 m2). There were 33 629 patients (17.5%) who had albuminuria testing; of whom 11 525 (34.3%) had albuminuria. Among 158 479 patients who were untested, the estimated albuminuria prevalence rate was 13.4% (n = 21 231). Thus, only 35.2% (11 525 of 32 756) of the projected population with albuminuria had been tested. Albuminuria testing was associated with higher adjusted odds of receiving ACEi or ARB treatment (OR, 2.39 [95% CI, 2.32-2.46]), SGLT2i treatment (OR, 8.22 [95% CI, 7.56-8.94]), and having blood pressure controlled to less than 140/90 mm Hg (OR, 1.20 [95% CI, 1.16-1.23])., Conclusions and Relevance: In this cohort study of patients with hypertension or diabetes, it was estimated that approximately two-thirds of patients with albuminuria were undetected due to lack of testing. These results suggest that improving detection of CKD with albuminuria testing represents a substantial opportunity to optimize care delivery for reducing CKD progression and cardiovascular complications.
- Published
- 2023
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196. Effect of Dietary Enrichment with Flaxseed, Vitamin E and Selenium, and of Market Class on the Broiler Breast Meat-Part 1: Nutritional and Functional Traits.
- Author
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Albergamo A, Vadalà R, Nava V, Bartolomeo G, Rando R, Colombo N, Gualtieri R, Petracci M, Di Bella G, Costa R, and Cicero N
- Subjects
- Animal Feed analysis, Animals, Chickens metabolism, Diet veterinary, Dietary Supplements, Lipids, Meat analysis, Vitamin E metabolism, Vitamin E pharmacology, Flax metabolism, Selenium metabolism
- Abstract
The effect of dietary enrichment with flaxseed, selenium and vitamin E, and market class on the nutritional and functional value of breast meat was evaluated. A completely randomized block design was set up, where the experimental unit (n = 6000 birds) received conventional or enriched diet and was slaughtered at 37 (light class), 47 (medium class), or 57 (heavy class) days of life. Hence, functional and standard Pectoralis major muscles from every market class were analyzed for FA composition, inorganic elements and vitamin E. Lipid metabolism indices and health lipid indicators were assessed along with the nutritional value. A multiple linear model revealed that in breasts, the dietary treatment significantly influenced (p < 0.05) the FA profile, lipid metabolism and health lipid indices, while the slaughtering weight was related (p < 0.05) to most of elements (e.g., Na, Mg, K, Mn, and Se) and vitamin E. The interdependence of the two factors had strong relations (p < 0.05) with total PUFAs, including linolenic acid, desaturase activities, health lipid indices, trace essential elements and vitamin E. Consequently, enriched meat from heavy chickens showed the best functional and nutritional traits. Overall, the study pointed out that both market class and dietary manipulation are two relevant factors to consider for producing breast meat with higher nutritional and functional value.
- Published
- 2022
- Full Text
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197. Protective effects of a SIRT1 inhibitor on primordial follicle activation and growth induced by cyclophosphamide: insights from a bovine in vitro folliculogenesis system.
- Author
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Di Emidio G, Tatone C, Barbato V, Genovese V, Placidi M, Talevi R, and Gualtieri R
- Subjects
- Animals, Cattle, Culture Media pharmacology, Cyclophosphamide pharmacology, Female, Ovary metabolism, Ovarian Follicle, Sirtuin 1 antagonists & inhibitors, Sirtuin 1 metabolism
- Abstract
Purpose: Although oncological advances have improved survival rates of female cancer patients, they often suffer a reduced fertility due to treatment side effects. In the present study, we evaluated the potential fertoprotective effects of the specific inhibitor of SIRT1, EX-527, on the gonadotoxic action exerted by cyclophosphamide (CPM) on loss of primordial follicles (PFs)., Methods: The effects of the CPM metabolite phosphoramide mustard (PM) on follicle activation, growth and viability and the protective action of EX-527 against PM effects were evaluated on bovine ovarian cortical strips in vitro cultured for 1 or 6 days. To understand whether PFs exposed to PM plus EX-527 were able to activate and grow to the secondary stage after suspension of the treatment, strips cultured for 3 days in PM plus EX-527 for 3 days were transferred to plain medium until day 6. Follicle growth and health were evaluated through histology and viability assay at a confocal microscope. In order to investigate the molecular pathways underlying the ovarian response to PM in the presence of EX-527, we analysed the protein level of SIRT1, HuR, PARP1 and SOD2 after 1 day of in vitro culture., Results: We found that (1) PM, the main CPM active metabolite, promotes PF activation; (2) the ovarian stress response induced by PM includes a SIRT1-dependent pathway; and (3) EX-527 reduces PF activation and growth induced by PM., Conclusion: SIRT1 can represent a candidate molecule to be targeted to protect ovarian follicles from alkylating agents and EX-527 could represent a potential fertoprotective agent for cancer patients., (© 2022. The Author(s).)
- Published
- 2022
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198. Physicochemical, Nutritional, Microbiological, and Sensory Qualities of Chicken Burgers Reformulated with Mediterranean Plant Ingredients and Health-Promoting Compounds.
- Author
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Albergamo A, Vadalà R, Metro D, Nava V, Bartolomeo G, Rando R, Macrì A, Messina L, Gualtieri R, Colombo N, Sallemi S, Leonardi M, Lo Turco V, Dugo G, and Cicero N
- Abstract
The quality of chicken burgers reformulated by the partial replacement of meat by Mediterranean plant ingredients and enriched with peculiar amounts of n-3 PUFAs, Mg, Fe, Se, and folic acid, was evaluated in comparison to conventional chicken burgers. Specifically, two types of burger were developed, namely the "Sicilian burger"-based on cherry tomato and rosemary-and the "Mediterranean burger"-with basil leaves and thyme essential oil-every recipe being differentially functionalized according to the nutritional requirements of consumers, such as children, pregnant women and elderly. Mediterranean ingredients were responsible for different pH, color, and cooking loss between conventional and functional burgers. Except for n-3 PUFAs resulting poorly fortified, the functionalization with Mg, Fe, Se, and vitamin B9 was successful in all products. Considering the target consumer categories, the daily consumption of the functional burger may assure an intake of Mg, Fe, and Se equal, respectively, to 37.31-59.90%, 17.76-46.81%, and 27.20-50.05%, and a cover of vitamin B9 of 31.98-48.31% of the relative population reference intakes. Fortified products kept a good microbiological quality during 5 days of refrigerated storage, and, according to the sensorial descriptive analysis and the hedonic test, they showed a higher acceptability than conventional burgers.
- Published
- 2021
- Full Text
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199. Sperm Oxidative Stress during In Vitro Manipulation and Its Effects on Sperm Function and Embryo Development.
- Author
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Gualtieri R, Kalthur G, Barbato V, Longobardi S, Di Rella F, Adiga SK, and Talevi R
- Abstract
Reactive oxygen species (ROS) generated at low levels during mitochondrial respiration have key roles in several signaling pathways. Oxidative stress (OS) arises when the generation of ROS exceeds the cell's antioxidant scavenging ability and leads to cell damage. Physiological ROS production in spermatozoa regulates essential functional characteristics such as motility, capacitation, acrosome reaction, hyperactivation, and sperm-oocyte fusion. OS can have detrimental effects on sperm function through lipid peroxidation, protein damage, and DNA strand breakage, which can eventually affect the fertility of an individual. Substantial evidence in the literature indicates that spermatozoa experiencing OS during in vitro manipulation procedures in human- and animal-assisted reproduction are increasingly associated with iatrogenic ROS production and eventual impairment of sperm function. Although a direct association between sperm OS and human assisted reproductive techniques (ART) outcomes after in vitro fertilization (IVF) and/or intracytoplasmic sperm injection (ICSI) is still a matter of debate, studies in animal models provide enough evidence on the adverse effects of sperm OS in vitro and defective fertilization and embryo development. This review summarized the literature on sperm OS in vitro, its effects on functional ability and embryo development, and the approaches that have been proposed to reduce iatrogenic sperm damage and altered embryonic development.
- Published
- 2021
- Full Text
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200. Perianal streptococcal disease in childhood: systematic literature review.
- Author
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Gualtieri R, Bronz G, Bianchetti MG, Lava SAG, Giuliano E, Milani GP, and Jermini LMM
- Subjects
- Amoxicillin, Anal Canal, Child, Female, Humans, Male, Streptococcus pyogenes, Pharyngitis diagnosis, Pharyngitis etiology, Streptococcal Infections diagnosis, Streptococcal Infections epidemiology
- Abstract
Group A Streptococcus has been associated with a perianal infection. We conducted a systematic review of the literature on childhood streptococcal perianitis in three databases: Excerpta Medica, National Library of Medicine, and Web of Science. The main purposes were to document the clinical features, the tendency to recur, the association with an asymptomatic streptococcal throat carriage, the accuracy of rapid streptococcal tests, and the mechanism possibly underlying the acquisition of this infection. More than 80% of cases are boys ≤7.0 years of age with defecation disorders, perianal pain, local itch, rectal bleeding, or fissure and a sharply demarcated perianal redness. Perianitis is associated with a streptococcal tonsillopharyngitis in about every fifth case. The time to diagnosis is ≥3 weeks in 65% of cases. Recurrences occur within 3½ months in about 20% of cases. An asymptomatic group A streptococcal throat carriage occurs in 63% of cases. As compared with perianal Streptococcus A culture, the rapid streptococcal tests have a positive predictive value of 80% and a negative predictive value of 96%. It is hypothesized that digital inoculation from nasopharynx to anus underlies perianitis. Many cases are likely caused directly by children, who are throat and nasal carriers of Streptococcus A. Some cases might occur in children, who have their bottoms wiped by caregivers with streptococcal tonsillopharyngitis or carriage of Streptococcus.Conclusion: Perianitis is an infection with a distinctive presentation and a rather long time to diagnosis. There is a need for a wider awareness of this condition among healthcare professionals. What is Known: • Group A Streptococcus may cause perianitis in childhood. • Systemic antimicrobials (penicillin V, amoxycillin, or cefuroxime) are superior to topical treatment. What is New: • The clinical presentation is distinctive (defecation disorders, perianal pain, local itch, rectal bleeding, or fissure and a sharply demarcated perianal redness). • The time to diagnosis is usually ≥3 weeks. Recurrences occur in about 20% of cases.
- Published
- 2021
- Full Text
- View/download PDF
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