Graph Element Networks: adaptive, structured computation and memory

We explore the use of graph neural networks (GNNs) to model spatial processes in which there is no a priori graphical structure. Similar to finite element analysis, we assign nodes of a GNN to spatial locations and use a computational process defined on the graph to model the relationship between an initial function defined over a space and a resulting function in the same space. We use GNNs as a computational substrate, and show that the locations of the nodes in space as well as their connectivity can be optimized to focus on the most complex parts of the space. Moreover, this representational strategy allows the learned input-output relationship to generalize over the size of the underlying space and run the same model at different levels of precision, trading computation for accuracy. We demonstrate this method on a traditional PDE problem, a physical prediction problem from robotics, and learning to predict scene images from novel viewpoints.Comment: Accepted to ICML 201

Replacement of fish oil with vegetable oil blends in feeds for greater amberjack (Seriola dumerili) juveniles: effect on growth performance, feed efficiency, tissue fatty acid composition and flesh nutritional value

[EN] This study was undertaken to assess the effects of fish oil (FO) substitution by a mixture of alternative vegetable oils (VO) on Seriola dumerili culture performance. A 154-day feeding experiment was conducted using juveniles (39.2 +/- 1.6g average weight). Three isolipidic and isoenergetic meal-based diets were formulated varying their lipid component. The control diet contained 100% FO (FO100), whereas diets VO50 and VO100 included 1/2 of oil blend and all the oil from blend of palm oil (PO) and linseed oil (LO) as substitute for FO, respectively. Dietary regime did not significantly affect growth performance, biometric indices, feed efficiency, plasma chemistry and liver and muscle lipid contents. Nonetheless, dietary VO inclusion impacted on the fatty acid profile of target tissues, especially in the liver. Fatty acid profiles of the fillets reflected those of the dietary oils except that there was apparent selective utilization of palmitic acid (C16:0) and oleic acid (C18:1n-9) and apparent selective retention of long-chain polyunsaturated fatty acids, especially eicosapentaenoic acid (EPA, C20:5n-3) and docosahexaenoic acid (DHA, C22:6n-3). The nutritional value and the potential ability to prevent the development of coronary heart diseases of the flesh lipid fraction decreased with gradual FO substitution.Ministerio de Ciencia e Innovacion (MICINN), Grant/Award Number: AGL2011-30547-C03-02Monge-Ortiz, R.; Tomas-Vidal, A.; Rodriguez-Barreto, D.; Martínez-Llorens, S.; Perez, J.; Jover Cerda, M.; Lorenzo, A. (2018). Replacement of fish oil with vegetable oil blends in feeds for greater amberjack (Seriola dumerili) juveniles: effect on growth performance, feed efficiency, tissue fatty acid composition and flesh nutritional value. Aquaculture Nutrition. 24(1):605-615. https://doi.org/10.1111/anu.12595S605615241Abrami, G., Natiello, F., Bronzi, P., McKenzie, D., Bolis, L., & Agradi, E. (1992). A comparison of highly unsaturated fatty acid levels in wild and farmed eels (Anguilla Anguilla). Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 101(1-2), 79-81. doi:10.1016/0305-0491(92)90161-jAlves Martins, D., Rocha, F., Martínez-Rodríguez, G., Bell, G., Morais, S., Castanheira, F., … Conceição, L. E. C. (2011). Teleost fish larvae adapt to dietary arachidonic acid supply through modulation of the expression of lipid metabolism and stress response genes. British Journal of Nutrition, 108(5), 864-874. doi:10.1017/s0007114511006143Bell, J. G., McEvoy, J., Tocher, D. R., McGhee, F., Campbell, P. J., & Sargent, J. R. (2001). Replacement of Fish Oil with Rapeseed Oil in Diets of Atlantic Salmon (Salmo salar) Affects Tissue Lipid Compositions and Hepatocyte Fatty Acid Metabolism. The Journal of Nutrition, 131(5), 1535-1543. doi:10.1093/jn/131.5.1535Bell, J. G., McGhee, F., Campbell, P. J., & Sargent, J. R. (2003). Rapeseed oil as an alternative to marine fish oil in diets of post-smolt Atlantic salmon (Salmo salar): changes in flesh fatty acid composition and effectiveness of subsequent fish oil «wash out». Aquaculture, 218(1-4), 515-528. doi:10.1016/s0044-8486(02)00462-3Bell, J. G., & Sargent, J. R. (2003). Arachidonic acid in aquaculture feeds: current status and future opportunities. Aquaculture, 218(1-4), 491-499. doi:10.1016/s0044-8486(02)00370-8Bell, J. G., Tocher, D. R., Henderson, R. J., Dick, J. R., & Crampton, V. O. (2003). Altered Fatty Acid Compositions in Atlantic Salmon (Salmo salar) Fed Diets Containing Linseed and Rapeseed Oils Can Be Partially Restored by a Subsequent Fish Oil Finishing Diet. The Journal of Nutrition, 133(9), 2793-2801. doi:10.1093/jn/133.9.2793Benedito-Palos, L., Navarro, J. C., Sitjà-Bobadilla, A., Gordon Bell, J., Kaushik, S., & Pérez-Sánchez, J. (2008). High levels of vegetable oils in plant protein-rich diets fed to gilthead sea bream (Sparus aurata L.): growth performance, muscle fatty acid profiles and histological alterations of target tissues. British Journal of Nutrition, 100(5), 992-1003. doi:10.1017/s0007114508966071Benedito-Palos, L., Saera-Vila, A., Calduch-Giner, J.-A., Kaushik, S., & Pérez-Sánchez, J. (2007). Combined replacement of fish meal and oil in practical diets for fast growing juveniles of gilthead sea bream (Sparus aurata L.): Networking of systemic and local components of GH/IGF axis. Aquaculture, 267(1-4), 199-212. doi:10.1016/j.aquaculture.2007.01.011BOURAOUI, L., SÁNCHEZ-GURMACHES, J., CRUZ-GARCIA, L., GUTIÉRREZ, J., BENEDITO-PALOS, L., PÉREZ-SÁNCHEZ, J., & NAVARRO, I. (2010). Effect of dietary fish meal and fish oil replacement on lipogenic and lipoprotein lipase activities and plasma insulin in gilthead sea bream (Sparus aurata). Aquaculture Nutrition, 17(1), 54-63. doi:10.1111/j.1365-2095.2009.00706.xBowyer, J. N., Qin, J. G., Smullen, R. P., Adams, L. R., Thomson, M. J. S., & Stone, D. A. J. (2013). The use of a soy product in juvenile yellowtail kingfish (Seriola lalandi) feeds at different water temperatures: 1. Solvent extracted soybean meal. Aquaculture, 384-387, 35-45. doi:10.1016/j.aquaculture.2012.12.005Bowyer, J. N., Qin, J. G., Smullen, R. P., & Stone, D. A. J. (2012). Replacement of fish oil by poultry oil and canola oil in yellowtail kingfish (Seriola lalandi) at optimal and suboptimal temperatures. Aquaculture, 356-357, 211-222. doi:10.1016/j.aquaculture.2012.05.014Bowyer, J. N., Rout-Pitt, N., Bain, P. A., Stone, D. A. J., & Schuller, K. A. (2012). Dietary fish oil replacement with canola oil up-regulates glutathione peroxidase 1 gene expression in yellowtail kingfish (Seriola lalandi). Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology, 162(4), 100-106. doi:10.1016/j.cbpb.2012.04.002Collins, G. M., Ball, A. S., Qin, J. G., Bowyer, J. N., & Stone, D. A. J. (2012). Effect of alternative lipids and temperature on growth factor gene expression in yellowtail kingfish (Seriola lalandi). Aquaculture Research, 45(7), 1236-1245. doi:10.1111/are.12067Coz-Rakovac, R., Smuc, T., Topic Popovic, N., Strunjak-Perovic, I., Hacmanjek, M., & Jadan, M. (2008). Novel methods for assessing fish blood biochemical data. Journal of Applied Ichthyology, 24(1), 77-80. doi:10.1111/j.1439-0426.2007.01041.xCraig, S. R., Washburn, B. S., & Gatlin, III, D. M. (1999). Fish Physiology and Biochemistry, 21(3), 249-255. doi:10.1023/a:1007843420128DÍAZ-LÓPEZ, M., PÉREZ, M. J., ACOSTA, N. G., TOCHER, D. R., JEREZ, S., LORENZO, A., & RODRÍGUEZ, C. (2009). Effect of dietary substitution of fish oil byEchiumoil on growth, plasma parameters and body lipid composition in gilthead seabream (Sparus aurataL.). Aquaculture Nutrition, 15(5), 500-512. doi:10.1111/j.1365-2095.2008.00616.xFountoulaki, E., Vasilaki, A., Hurtado, R., Grigorakis, K., Karacostas, I., Nengas, I., … Alexis, M. N. (2009). Fish oil substitution by vegetable oils in commercial diets for gilthead sea bream (Sparus aurata L.); effects on growth performance, flesh quality and fillet fatty acid profile. Aquaculture, 289(3-4), 317-326. doi:10.1016/j.aquaculture.2009.01.023Gisbert, E., Giménez, G., Fernández, I., Kotzamanis, Y., & Estévez, A. (2009). Development of digestive enzymes in common dentex Dentex dentex during early ontogeny. Aquaculture, 287(3-4), 381-387. doi:10.1016/j.aquaculture.2008.10.039Glencross, B. D. (2009). Exploring the nutritional demand for essential fatty acids by aquaculture species. Reviews in Aquaculture, 1(2), 71-124. doi:10.1111/j.1753-5131.2009.01006.xGlencross, B., Blyth, D., Irvin, S., Bourne, N., Campet, M., Boisot, P., & Wade, N. M. (2016). An evaluation of the complete replacement of both fishmeal and fish oil in diets for juvenile Asian seabass, Lates calcarifer. Aquaculture, 451, 298-309. doi:10.1016/j.aquaculture.2015.09.012Grigorakis, K. (2007). Compositional and organoleptic quality of farmed and wild gilthead sea bream (Sparus aurata) and sea bass (Dicentrarchus labrax) and factors affecting it: A review. Aquaculture, 272(1-4), 55-75. doi:10.1016/j.aquaculture.2007.04.062Henderson, R. J. (1996). Fatty acid metabolism in freshwater fish with particular reference to polyunsaturated fatty acids. Archiv für Tierernaehrung, 49(1), 5-22. doi:10.1080/17450399609381859Huang, S. S. Y., Oo, A. N., Higgs, D. A., Brauner, C. J., & Satoh, S. (2007). Effect of dietary canola oil level on the growth performance and fatty acid composition of juvenile red sea bream, Pagrus major. Aquaculture, 271(1-4), 420-431. doi:10.1016/j.aquaculture.2007.06.004Izquierdo, M. S., Obach, A., Arantzamendi, L., Montero, D., Robaina, L., & Rosenlund, G. (2003). Dietary lipid sources for seabream and seabass: growth performance, tissue composition and flesh quality. Aquaculture Nutrition, 9(6), 397-407. doi:10.1046/j.1365-2095.2003.00270.xKaushik, S. J., Covès, D., Dutto, G., & Blanc, D. (2004). Almost total replacement of fish meal by plant protein sources in the diet of a marine teleost, the European seabass, Dicentrarchus labrax. Aquaculture, 230(1-4), 391-404. doi:10.1016/s0044-8486(03)00422-8Khankari, N. K., Bradshaw, P. T., Steck, S. E., He, K., Olshan, A. F., Shen, J., … Gammon, M. D. (2015). Dietary intake of fish, polyunsaturated fatty acids, and survival after breast cancer: A population-based follow-up study on Long Island, New York. Cancer, 121(13), 2244-2252. doi:10.1002/cncr.29329Khaoian, P., Nguyen, H. P., Ogita, Y., Fukada, H., & Masumoto, T. (2014). Taurine supplementation and palm oil substitution in low-fish meal diets for young yellowtail Seriola quinqueradiata. Aquaculture, 420-421, 219-224. doi:10.1016/j.aquaculture.2013.11.012Kiessling, K.-H., & Kiessling, A. (1993). Selective utilization of fatty acids in rainbow trout (Oncorhynchus mykiss Walbaum) red muscle mitochondria. Canadian Journal of Zoology, 71(2), 248-251. doi:10.1139/z93-035Kowalska, A., Zakęś, Z., Siwicki, A. K., Jankowska, B., Jarmołowicz, S., & Demska-Zakęś, K. (2011). Impact of diets with different proportions of linseed and sunflower oils on the growth, liver histology, immunological and chemical blood parameters, and proximate composition of pikeperch Sander lucioperca (L.). Fish Physiology and Biochemistry, 38(2), 375-388. doi:10.1007/s10695-011-9514-zLech, G. P., & Reigh, R. C. (2012). Plant Products Affect Growth and Digestive Efficiency of Cultured Florida Pompano (Trachinotus carolinus) Fed Compounded Diets. PLoS ONE, 7(4), e34981. doi:10.1371/journal.pone.0034981Lemaire, P., Drai, P., Mathieu, A., Lemaire, S., Carrière, S., Giudicelli, J., & Lafaurie, M. (1991). Changes with different diets in plasma enzymes (GOT, GPT, LDH, ALP) and plasma lipids (cholesterol, triglycerides) of sea-bass (Dicentrarchus labrax). Aquaculture, 93(1), 63-75. doi:10.1016/0044-8486(91)90205-lLin, H., Chen, X., Chen, S., Zhuojia, L., Huang, Z., Niu, J., … Lu, X. (2011). Replacement of fish meal with fermented soybean meal in practical diets for pompanoTrachinotus ovatus. Aquaculture Research, 44(1), 151-156. doi:10.1111/j.1365-2109.2011.03000.xMazzola, A., Favaloro, E., & Sarà, G. (2000). Cultivation of the Mediterranean amberjack, Seriola dumerili (Risso, 1810), in submerged cages in the Western Mediterranean Sea. Aquaculture, 181(3-4), 257-268. doi:10.1016/s0044-8486(99)00243-4Menoyo, D., Izquierdo, M. S., Robaina, L., Ginés, R., Lopez-Bote, C. J., & Bautista, J. M. (2004). Adaptation of lipid metabolism, tissue composition and flesh quality in gilthead sea bream (Sparus aurata) to the replacement of dietary fish oil by linseed and soyabean oils. British Journal of Nutrition, 92(1), 41-52. doi:10.1079/bjn20041165Mourente, G., & Bell, J. G. (2006). Partial replacement of dietary fish oil with blends of vegetable oils (rapeseed, linseed and palm oils) in diets for European sea bass (Dicentrarchus labrax L.) over a long term growth study: Effects on muscle and liver fatty acid composition and effectiveness of a fish oil finishing diet. Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology, 145(3-4), 389-399. doi:10.1016/j.cbpb.2006.08.012Mozanzadeh, M. T., Agh, N., Yavari, V., Marammazi, J. G., Mohammadian, T., & Gisbert, E. (2016). Partial or total replacement of dietary fish oil with alternative lipid sources in silvery-black porgy (Sparidentex hasta). Aquaculture, 451, 232-240. doi:10.1016/j.aquaculture.2015.09.022Nguyen, H. P., Khaoian, P., Fukada, H., Suzuki, N., & Masumoto, T. (2013). Feeding fermented soybean meal diet supplemented with taurine to yellowtailSeriola quinqueradiataaffects growth performance and lipid digestion. Aquaculture Research, 46(5), 1101-1110. doi:10.1111/are.12267Peng, S., Chen, L., Qin, J. G., Hou, J., Yu, N., Long, Z., … Sun, X. (2008). Effects of replacement of dietary fish oil by soybean oil on growth performance and liver biochemical composition in juvenile black seabream, Acanthopagrus schlegeli. Aquaculture, 276(1-4), 154-161. doi:10.1016/j.aquaculture.2008.01.035Pérez, J. A., Rodríguez, C., Bolaños, A., Cejas, J. R., & Lorenzo, A. (2014). Beef tallow as an alternative to fish oil in diets for gilthead sea bream (Sparus aurata) juveniles: Effects on fish performance, tissue fatty acid composition, health and flesh nutritional value. European Journal of Lipid Science and Technology, 116(5), 571-583. doi:10.1002/ejlt.201300457Piedecausa, M. A., Mazón, M. J., García García, B., & Hernández, M. D. (2007). Effects of total replacement of fish oil by vegetable oils in the diets of sharpsnout seabream (Diplodus puntazzo). Aquaculture, 263(1-4), 211-219. doi:10.1016/j.aquaculture.2006.09.039Regost, C., Arzel, J., Robin, J., Rosenlund, G., & Kaushik, S. . (2003). Total replacement of fish oil by soybean or linseed oil with a return to fish oil in turbot (Psetta maxima). Aquaculture, 217(1-4), 465-482. doi:10.1016/s0044-8486(02)00259-4Richard, N., Mourente, G., Kaushik, S., & Corraze, G. (2006). Replacement of a large portion of fish oil by vegetable oils does not affect lipogenesis, lipid transport and tissue lipid uptake in European seabass (Dicentrarchus labrax L.). Aquaculture, 261(3), 1077-1087. doi:10.1016/j.aquaculture.2006.07.021Rossi, W., & Davis, D. A. (2012). Replacement of fishmeal with poultry by-product meal in the diet of Florida pompano Trachinotus carolinus L. Aquaculture, 338-341, 160-166. doi:10.1016/j.aquaculture.2012.01.026Ruyter, B., Moya-Falcón, C., Rosenlund, G., & Vegusdal, A. (2006). Fat content and morphology of liver and intestine of Atlantic salmon (Salmo salar): Effects of temperature and dietary soybean oil. Aquaculture, 252(2-4), 441-452. doi:10.1016/j.aquaculture.2005.07.014Saito, H. (2012). Lipid characteristics of two subtropical Seriola fishes, Seriola dumerili and Seriola rivoliana, with differences between cultured and wild varieties. Food Chemistry, 135(3), 1718-1729. doi:10.1016/j.foodchem.2012.05.122SALES, J., & GLENCROSS, B. (2011). A meta-analysis of the effects of dietary marine oil replacement with vegetable oils on growth, feed conversion and muscle fatty acid composition of fish species. Aquaculture Nutrition, 17(2), e271-e287. doi:10.1111/j.1365-2095.2010.00761.xSARKER, M. S. A., SATOH, S., KAMATA, K., HAGA, Y., & YAMAMOTO, Y. (2011). Partial replacement of fish meal with plant protein sources using organic acids to practical diets for juvenile yellowtail, Seriola quinqueradiata. Aquaculture Nutrition, 18(1), 81-89. doi:10.1111/j.1365-2095.2011.00880.xSENO-O, A., TAKAKUWA, F., HASHIGUCHI, T., MORIOKA, K., MASUMOTO, T., & FUKADA, H. (2008). Replacement of dietary fish oil with olive oil in young yellowtailSeriola quinqueradiata: effects on growth, muscular fatty acid composition and prevention of dark muscle discoloration during refrigerated storage. Fisheries Science, 74(6), 1297-1306. doi:10.1111/j.1444-2906.2008.01655.xSicuro, B., & Luzzana, U. (2016). The State ofSeriola spp.Other Than Yellowtail (S. quinqueradiata) Farming in the World. Reviews in Fisheries Science & Aquaculture, 24(4), 314-325. doi:10.1080/23308249.2016.1187583Simopoulos, A. P. (2008). The Importance of the Omega-6/Omega-3 Fatty Acid Ratio in Cardiovascular Disease and Other Chronic Diseases. Experimental Biology and Medicine, 233(6), 674-688. doi:10.3181/0711-mr-311Simopoulos, A. P. (2011). Importance of the Omega-6/Omega-3 Balance in Health and Disease: Evolutionary Aspects of Diet. Healthy Agriculture, Healthy Nutrition, Healthy People, 10-21. doi:10.1159/000327785Simopoulos, A. (2016). An Increase in the Omega-6/Omega-3 Fatty Acid Ratio Increases the Risk for Obesity. Nutrients, 8(3), 128. doi:10.3390/nu8030128STUBHAUG, I., LIE, Ø., & TORSTENSEN, B. E. (2007). Fatty acid productive value and ?-oxidation capacity in Atlantic salmon (Salmo salar L.) fed on different lipid sources along the whole growth period. Aquaculture Nutrition, 13(2), 145-155. doi:10.1111/j.1365-2095.2007.00462.xTacon, A. G. J., & Metian, M. (2008). Global overview on the use of fish meal and fish oil in industrially compounded aquafeeds: Trends and future prospects. Aquaculture, 285(1-4), 146-158. doi:10.1016/j.aquaculture.2008.08.015Takakuwa, F., Fukada, H., Hosokawa, H., & Masumoto, T. (2006). Optimum digestible protein and energy levels and ratio for greater amberjack Seriola dumerili (Risso) fingerling. Aquaculture Research, 37(15), 1532-1539. doi:10.1111/j.1365-2109.2006.01590.xTocher, D. R. (2010). Fatty acid requirements in ontogeny of marine and freshwater fish. Aquaculture Research, 41(5), 717-732. doi:10.1111/j.1365-2109.2008.02150.xTOMAS, A., DE LA GANDARA, F., GARCIA-GOMEZ, A., PEREZ, L., & JOVER, M. (2005). Utilization of soybean meal as an alternative protein source in the Mediterranean yellowtail, Seriola dumerili. Aquaculture Nutrition, 11(5), 333-340. doi:10.1111/j.1365-2095.2005.00365.xTorstensen, B. E., Froyland, L., & Lie, O. (2004). Replacing dietary fish oil with increasing levels of rapeseed oil and olive oil - effects on Atlantic salmon (Salmo salar L.) tissue and lipoprotein lipid composition and lipogenic enzyme activities. Aquaculture Nutrition, 10(3), 175-192. doi:10.1111/j.1365-2095.2004.00289.xTorstensen, B. E., Lie, Ø., & Frøyland, L. (2000). Lipid metabolism and tissue composition in Atlantic salmon (Salmo salar L.)—Effects of capelin oil, palm oil, and oleic acid-enriched sunflower oil as dietary lipid sources. Lipids, 35(6), 653-664. doi:10.1007/s11745-000-0570-6TRUSHENSKI, J., SCHWARZ, M., LEWIS, H., LAPORTE, J., DELBOS, B., TAKEUCHI, R., & SAMPAIO, L. A. (2011). Effect of replacing dietary fish oil with soybean oil on production performance and fillet lipid and fatty acid composition of juvenile cobia Rachycentron canadum. Aquaculture Nutrition, 17(2), e437-e447. doi:10.1111/j.1365-2095.2010.00779.xTucker, J. W., Lellis, W. A., Vermeer, G. K., Roberts, D. E., & Woodward, P. N. (1997). The effects of experimental starter diets with different levels of soybean or menhaden oil on red drum (Sciaenops ocellatus). Aquaculture, 149(3-4), 323-339. doi:10.1016/s0044-8486(96)01448-2Turan, H. (2007). Fatty acid profile and proximate composition of the thornback ray (Raja clavata, L. 1758) from the Sinop coast in the Black Sea. Journal of Fisheries Sciences.com, 1(2), 97-103. doi:10.3153/jfscom.2007012Turchini, G. M., Torstensen, B. E., & Ng, W.-K. (2009). Fish oil replacement in finfish nutrition. Reviews in Aquaculture, 1(1), 10-57. doi:10.1111/j.1753-5131.2008.01001.xUlbricht, T. L. V., & Southgate, D. A. T. (1991). Coronary heart disease: seven dietary factors. The Lancet, 338(8773), 985-992. doi:10.1016/0140-6736(91)91846-mUYAN, O., KOSHIO, S., ISHIKAWA, M., YOKOYAMA, S., UYAN, S., REN, T., & HERNANDEZ, L. H. H. (2009). 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Carbohydrate effect of novel arene Ru(II) phenanthroline-glycoconjugates on metastatic biological processes

Novel water-soluble half-sandwich ruthenium(II) polypyridyl-glycoconjugates [Ru(p-cymene)Cl{N-(1,10-phenanthroline-5-yl)-& beta;-glycopyranosylamine}][Cl] (glycopyranosyl = D-glucopyranosyl (1), D-mannopyranosyl (2), L-rhamnopyranosyl (3) and L-xylopyranosyl (4)) have been synthesized and fully characterized. Their behaviour in water under physiological conditions has been studied by nuclear magnetic resonance spectroscopy, revealing their hydrolytic stability. Interactions of the novel compounds with duplex-deoxiribonucleic acid (dsDNA) were investigated by different techniques and the results indicate that, under physiological pH and saline conditions, the metal glycoconjugates bind DNA in the minor groove and/or through external, electrostatic interactions, and by a non-classical, partial intercalation mechanism in non-saline phosphate buffered solution. Effects of compounds 1-4 on cell viability have been assessed in vitro against two human cell lines (androgen-independent prostate cancer PC-3 and non-tumorigenic prostate RWPE-1), showing moderate cytotoxicities, with IC50 values higher than those found for free ligands [N-(1,10-phenanthroline-5-yl)-& beta;-glycopyranosylamine] (glycopyranosyl = D-glucopyranosyl (a), D-mannopyranosyl (b), L-rhamnopyranosyl (c) and L-xylopyranosyl (d)) or corresponding metal-aglycone. Cell viability was assayed in the presence and absence of the glucose transporters (GLUTs) inhibitor [N4-{1-(4-cyanobenzyl)-5-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl}-7-fluoroquinoline-2,4dicarboxamide] (BAY-876), and the results point to a negligible impact of the inhibition of GLUTs on the cytotoxicity caused by Ru(II) compounds 1-4. Remarkably, glycoconjugates 1-4 potently affect the migration pattern of PC-3 cells, and the wound healing assay evidence that the presence of the carbohydrate and the Ru(II) center is a requisite for the anti-migratory activity observed in these novel derivatives. In addition, derivatives 1-4 strongly affect the matrix metalloproteinase MMP-9 activities of PC-3 cells, while proMMP-2 and especially proMMP-9 were influenced to a much lesser extent

Hydrogeomorphological analysis and modelling for a comprehensive understanding of flash-flood damage processes: the 9 October 2018 event in northeastern Mallorca

[EN] A flash-flood event hit the northeastern part of Mallorca on 9 October 2018, causing 13 casualties. Mal- lorca is prone to catastrophic flash floods acting on a sce- nario of deep landscape transformation caused by Mediter- ranean tourist resorts. As global change may exacerbate dev- astating flash floods, analyses of catastrophic events are cru- cial to support effective prevention and mitigation measures. Field-based remote-sensing and modelling techniques were used in this study to evaluate rainfall¿runoff processes at the catchment scale linked to hydrological modelling. Continu- ous streamflow monitoring data revealed a peak discharge of 442 m³ s¿¹ with an unprecedented runoff response. This ex- ceptional behaviour triggered the natural disaster as a com- bination of heavy rainfall (249 mm in 10 h), karstic features and land cover disturbances in the Begura de Salma River catchment (23 km²). Topography-based connectivity indices and geomorphic change detection were used as rapid post- catastrophe decision-making tools, playing a key role dur- ing the rescue search. These hydrogeomorphological preci- sion techniques were combined with the Copernicus Emer- gency Management Service and ¿ground-based¿ damage as- sessment, which showed very accurately the damage-driving factors in the village of Sant Llorenç des Cardassar. The main challenges in the future are to readapt hydrological modelling to global change scenarios, implement an early flash-flood warning system and take adaptive and resilient measures on the catchment scale.This research was supported by the Spanish Ministry of Science, Innovation and Universities, the Spanish Agency of Research (AEI) and the European Regional Development Fund (ERDF) through the project CGL2017-88200-R "Functional hydrological and sediment connectivity at Mediterranean catchments: global change scenarios -MEDhyCON2".Estrany, J.; Ruiz-Perez, M.; Mutzner, R.; Fortesa, J.; Nacher Rodriguez, B.; Tomas-Burguera, M.; Garcia-Comendador, J.... (2020). Hydrogeomorphological analysis and modelling for a comprehensive understanding of flash-flood damage processes: the 9 October 2018 event in northeastern Mallorca. 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The human Tp53 Arg72Pro polymorphism explains different functional prognosis in stroke

Poor prognosis after ischemic stroke or intracerebral hemorrhage is linked to a particular polymorphism in the human gene encoding p53

Antimicrobial resistance among migrants in Europe: a systematic review and meta-analysis

BACKGROUND: Rates of antimicrobial resistance (AMR) are rising globally and there is concern that increased migration is contributing to the burden of antibiotic resistance in Europe. However, the effect of migration on the burden of AMR in Europe has not yet been comprehensively examined. Therefore, we did a systematic review and meta-analysis to identify and synthesise data for AMR carriage or infection in migrants to Europe to examine differences in patterns of AMR across migrant groups and in different settings. METHODS: For this systematic review and meta-analysis, we searched MEDLINE, Embase, PubMed, and Scopus with no language restrictions from Jan 1, 2000, to Jan 18, 2017, for primary data from observational studies reporting antibacterial resistance in common bacterial pathogens among migrants to 21 European Union-15 and European Economic Area countries. To be eligible for inclusion, studies had to report data on carriage or infection with laboratory-confirmed antibiotic-resistant organisms in migrant populations. We extracted data from eligible studies and assessed quality using piloted, standardised forms. We did not examine drug resistance in tuberculosis and excluded articles solely reporting on this parameter. We also excluded articles in which migrant status was determined by ethnicity, country of birth of participants' parents, or was not defined, and articles in which data were not disaggregated by migrant status. Outcomes were carriage of or infection with antibiotic-resistant organisms. We used random-effects models to calculate the pooled prevalence of each outcome. The study protocol is registered with PROSPERO, number CRD42016043681. FINDINGS: We identified 2274 articles, of which 23 observational studies reporting on antibiotic resistance in 2319 migrants were included. The pooled prevalence of any AMR carriage or AMR infection in migrants was 25·4% (95% CI 19·1-31·8; I2 =98%), including meticillin-resistant Staphylococcus aureus (7·8%, 4·8-10·7; I2 =92%) and antibiotic-resistant Gram-negative bacteria (27·2%, 17·6-36·8; I2 =94%). The pooled prevalence of any AMR carriage or infection was higher in refugees and asylum seekers (33·0%, 18·3-47·6; I2 =98%) than in other migrant groups (6·6%, 1·8-11·3; I2 =92%). The pooled prevalence of antibiotic-resistant organisms was slightly higher in high-migrant community settings (33·1%, 11·1-55·1; I2 =96%) than in migrants in hospitals (24·3%, 16·1-32·6; I2 =98%). We did not find evidence of high rates of transmission of AMR from migrant to host populations. INTERPRETATION: Migrants are exposed to conditions favouring the emergence of drug resistance during transit and in host countries in Europe. Increased antibiotic resistance among refugees and asylum seekers and in high-migrant community settings (such as refugee camps and detention facilities) highlights the need for improved living conditions, access to health care, and initiatives to facilitate detection of and appropriate high-quality treatment for antibiotic-resistant infections during transit and in host countries. Protocols for the prevention and control of infection and for antibiotic surveillance need to be integrated in all aspects of health care, which should be accessible for all migrant groups, and should target determinants of AMR before, during, and after migration. FUNDING: UK National Institute for Health Research Imperial Biomedical Research Centre, Imperial College Healthcare Charity, the Wellcome Trust, and UK National Institute for Health Research Health Protection Research Unit in Healthcare-associated Infections and Antimictobial Resistance at Imperial College London

Radiopurity control in the NEXT-100 double beta decay experiment: procedures and initial measurements

We have investigated the possibility of calibrating the PMTs of scintillation detectors, using the primary scintillation produced by X-rays to induce single photoelectron response of the PMT. The high-energy tail of this response, can be approximated to an exponential function, under some conditions. In these cases, it is possible to determine the average gain for each PMT biasing voltage from the inverse of the exponent of the exponential fit to the tail, which can be done even if the background and/or noise cover-up most of the distribution. We have compared our results with those obtained by the commonly used single electron response (SER) method, which uses a LED to induce a single photoelectron response of the PMT and determines the peak position of such response, relative to the pedestal peak (the electronic noise peak, which corresponds to 0 photoelectrons). The results of the exponential fit method agree with those obtained by the SER method when the average number of photoelectrons reaching the first dynode per light/scintillation pulse is around 1.0. The SER method has higher precision, while the exponential fit method has the advantage of being useful in situations where the PMT is already in situ, being difficult or even impossible to apply the SER method, e.g. in sealed scintillator/PMT devices