17 research outputs found

    Resistance in melon to Monosporascus cannonballus and M. eutypoides ; fungal pathogens associated with Monosporascus root rot and vine decline

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    This is the peer reviewed version of the following article: Castro, G, Perpiñá, G, Esteras, C, Armengol, J, Picó, B, Pérez-de-Castro, A. Resistance in melon to Monosporascus cannonballus and M. eutypoides: Fungal pathogens associated with Monosporascus root rot and vine decline. Ann Appl Biol. 2020; 177: 101¿ 111, which has been published in final form at https://doi.org/10.1111/aab.12590. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.[EN] The fungal species Monosporascus cannonballus and M. eutypoides have been described as the causal agents of Monosporascus root rot and vine decline disease (MRRVD), which mainly affects melon and watermelon crops. Resistance to M. cannonballus has been reported in some melon cultivars (ssp. melo). Moreover, melon ssp. agrestis accessions have proven to be better resistance sources. This is the case of the Korean accession 'Pat 81', highly resistant under field and artificial inoculation. The objective of the work here presented was the evaluation of the resistance to MRRVD of different accessions representing the variability of Cucumis melo ssp. agrestis, against both, M. cannonballus and M. eutypoides, in a multiyear assay under different infection conditions. In general, M. eutypoides was less aggressive than M. cannonballus in the different environmental conditions. There was a strong influence of temperature on MRRVD, with more severe symptoms with higher temperatures and with variable effect of infection on plant development depending on the fungal species considered. Resistance to MRRVD has been confirmed in 'Pat 81' and in its derived F1 with a susceptible Piel de Sapo melon. Among the new germplasm explored, African accessions (both wild agrestis and exotic cultivated acidulus) showed good performance in artificial inoculation assays and in field conditions. These sources do not present compatibility problems with commercial melons, so they can be introduced in backcrossing programs. The accession assayed of the wild relative Cucumis metuliferus, also resistant to Fusarium wilt and to root-knot nematode, was highly resistant to MRRVD. The interest of this accession mainly relies in its advantages as a rootstock for melon.Generalitat Valenciana, Grant/Award Number: PROMETEO2017/078; Ministerio de Economia y Competitividad, Grant/Award Number: AGL2014-53398-C2-2-R; Spanish Ministerio de Ciencia, Innovacion y Universidades, Grant/Award Number: AGL2017-85563-C2-1-RCastro, G.; Perpiña Martin, G.; Esteras Gómez, C.; Armengol Fortí, J.; Picó Sirvent, MB.; Pérez De Castro, AM. (2020). Resistance in melon to Monosporascus cannonballus and M. eutypoides ; fungal pathogens associated with Monosporascus root rot and vine decline. Annals of Applied Biology. 177(1):101-111. https://doi.org/10.1111/aab.12590S1011111771Aegerter, B. J., Gordon, T. R., & Davis, R. M. (2000). Occurrence and Pathogenicity of Fungi Associated with Melon Root Rot and Vine Decline in California. Plant Disease, 84(3), 224-230. doi:10.1094/pdis.2000.84.3.224Salem, I. B., Correia, K. C., Boughalleb, N., Michereff, S. J., León, M., Abad-Campos, P., … Armengol, J. (2013). Monosporascus eutypoides, a Cause of Root Rot and Vine Decline in Tunisia, and Evidence that M. cannonballus and M. eutypoides Are Distinct Species. Plant Disease, 97(6), 737-743. doi:10.1094/pdis-05-12-0464-reBiernacki, M., & Bruton, B. D. (2001). Quantitative Response of Cucumis melo Inoculated with Root Rot Pathogens. Plant Disease, 85(1), 65-70. doi:10.1094/pdis.2001.85.1.65Chew-Madinaveitia, Y. I., Gaytán-Mascorro, A., & Herrera-Pérez, T. (2012). First Report of Monosporascus cannonballus on Melon in Mexico. Plant Disease, 96(7), 1068-1068. doi:10.1094/pdis-02-12-0181-pdnCluck, T. W., Biles, C. L., Duggan, M., Jackson, T., Carson, K., Armengol, J., … Bruton, B. D. (2009). Association of dsRNA to Down-Regulation of Perithecial Synthesis in Monosporascus cannonballus. The Open Mycology Journal, 3(1), 9-19. doi:10.2174/1874437000903010009Cohen, R., Horev, C., Burger, Y., Shriber, S., Hershenhorn, J., Katan, J., & Edelstein, M. (2002). Horticultural and Pathological Aspects of Fusarium Wilt Management Using Grafted Melons. HortScience, 37(7), 1069-1073. doi:10.21273/hortsci.37.7.1069Cohen, R., Pivonia, S., Burger, Y., Edelstein, M., Gamliel, A., & Katan, J. (2000). Toward Integrated Management of Monosporascus Wilt of Melons in Israel. Plant Disease, 84(5), 496-505. doi:10.1094/pdis.2000.84.5.496Cohen, R., Pivonia, S., Crosby, K. M., & Martyn, R. D. (2012). Advances in the Biology and Management of Monosporascus Vine Decline and Wilt of Melons and Other Cucurbits. Horticultural Reviews, 77-120. doi:10.1002/9781118100592.ch2Collado, J., Gonzalez, A., Platas, G., Stchigel, A. M., Guarro, J., & Pelaez, F. (2002). Monosporascus ibericus sp. nov., an endophytic ascomycete from plants on saline soils, with observations on the position of the genus based on sequence analysis of the 18S rDNA. Mycological Research, 106(1), 118-127. doi:10.1017/s0953756201005172Crosby, K. (2000). NARROW-SENSE HERITABILITY ESTIMATES FOR ROOT TRAITS AND MONOSPORASCUS CANNONBALLUS TOLERANCE IN MELON (CUCUMIS MELO) BY PARENT-OFFSPRING REGRESSION. Acta Horticulturae, (510), 149-154. doi:10.17660/actahortic.2000.510.25Crosby, K., Wolff, D., & Miller, M. (2000). Comparisons of Root Morphology in Susceptible and Tolerant Melon Cultivars before and after Infection by Monosporascus cannonballus. HortScience, 35(4), 681-683. doi:10.21273/hortsci.35.4.681Dias, R. de C. S., Pico, B., Espinos, A., & Nuez, F. (2004). Resistance to melon vine decline derived from Cucumis melo ssp. agrestis: genetic analysis of root structure and root response. Plant Breeding, 123(1), 66-72. doi:10.1046/j.1439-0523.2003.00944.xDíaz, J. A., Mallor, C., Soria, C., Camero, R., Garzo, E., Fereres, A., … Moriones, E. (2003). Potential Sources of Resistance for Melon to Nonpersistently Aphid-borne Viruses. Plant Disease, 87(8), 960-964. doi:10.1094/pdis.2003.87.8.960Endl, J., Achigan-Dako, E. G., Pandey, A. K., Monforte, A. J., Pico, B., & Schaefer, H. (2018). Repeated domestication of melon (Cucumis melo ) in Africa and Asia and a new close relative from India. American Journal of Botany, 105(10), 1662-1671. doi:10.1002/ajb2.1172Expósito, A., Munera, M., Giné, A., López-Gómez, M., Cáceres, A., Picó, B., … Sorribas, F. J. (2018). Cucumis metuliferusis resistant to root-knot nematodeMi1.2gene (a)virulent isolates and a promising melon rootstock. Plant Pathology, 67(5), 1161-1167. doi:10.1111/ppa.12815Fita, A., Esteras, C., Picó, B., & Nuez, F. (2009). Cucumis melo L. New Breeding Lines Tolerant to Melon Vine Decline. HortScience, 44(7), 2022-2024. doi:10.21273/hortsci.44.7.2022Fita, A., Picó, B., Dias, R. C. S., & Nuez, F. (2008). Effects of root architecture on response to melon vine decline. The Journal of Horticultural Science and Biotechnology, 83(5), 616-623. doi:10.1080/14620316.2008.11512432Fita, A., Picó, B., Dias, R. C. S., & Nuez, F. (2009). ‘Piel de Sapo’ Breeding Lines Tolerant to Melon Vine Decline. HortScience, 44(5), 1458-1460. doi:10.21273/hortsci.44.5.1458Fita, A., Picó, B., Monforte, A. J., & Nuez, F. (2008). Genetics of Root System Architecture Using Near-isogenic Lines of Melon. Journal of the American Society for Horticultural Science, 133(3), 448-458. doi:10.21273/jashs.133.3.448Fita, A., Picó, B., Roig, C., & Nuez, F. (2007). Performance ofCucumis melossp.agrestisas a rootstock for melon. The Journal of Horticultural Science and Biotechnology, 82(2), 184-190. doi:10.1080/14620316.2007.11512218Gisbert C. Sorribas F. J. Martínez E. M. Gammoudi N. Bernat G. &Picó M.B. (2014). Grafting melons onto potentialCucumisspp. rootstocks. InCOST ACTION FA1204 2nd annual conference – Innovation in vegetable grafting for sustainability–Proceedings. 57 pp. Carcavelos Portugal.Gonzalo, M. J., Díaz, A., Dhillon, N. P. S., Reddy, U. K., Picó, B., & Monforte, A. J. (2019). Re-evaluation of the role of Indian germplasm as center of melon diversification based on genotyping-by-sequencing analysis. BMC Genomics, 20(1). doi:10.1186/s12864-019-5784-0Iglesias, A., Pico, B., & Nuez, F. (2000). A temporal genetic analysis of disease resistance genes: resistance to melon vine decline derived from Cucumis melo var. agrestis. Plant Breeding, 119(4), 329-334. doi:10.1046/j.1439-0523.2000.00507.xIGLESIAS, A., PICÓ, B., & NUEZ, F. (2000). Pathogenicity of fungi associated with melon vine decline and selection strategies for breeding resistant cultivars. Annals of Applied Biology, 137(2), 141-151. doi:10.1111/j.1744-7348.2000.tb00046.xLeida, C., Moser, C., Esteras, C., Sulpice, R., Lunn, J. E., de Langen, F., … Picó, B. (2015). Variability of candidate genes, genetic structure and association with sugar accumulation and climacteric behavior in a broad germplasm collection of melon (Cucumis melo L.). BMC Genetics, 16(1). doi:10.1186/s12863-015-0183-2López-Sesé, A. I., & Gómez-Guillamón, M. L. (2000). Resistance to Cucurbit Yellowing Stunting Disorder Virus (CYSDV) in Cucumis melo L. HortScience, 35(1), 110-113. doi:10.21273/hortsci.35.1.110Malloch, D., & Cain, R. F. (1971). New cleistothecial Sordariaceae and a new family, Coniochaetaceae. Canadian Journal of Botany, 49(6), 869-880. doi:10.1139/b71-127Markakis, E. A., Trantas, E. A., Lagogianni, C. S., Mpalantinaki, E., Pagoulatou, M., Ververidis, F., & Goumas, D. E. (2018). First Report of Root Rot and Vine Decline of Melon Caused by Monosporascus cannonballus in Greece. Plant Disease, 102(5), 1036-1036. doi:10.1094/pdis-10-17-1568-pdnD. Martyn, R. (2007). LATE-SEASON VINE DECLINES OF MELONS: PATHOLOGICAL, CULTURAL OR BOTH? Acta Horticulturae, (731), 345-356. doi:10.17660/actahortic.2007.731.46Martyn, R. D. (1996). First Report of Monosporascus Root Rot/Vine Decline of Watermelon in Mexico. Plant Disease, 80, 1430. doi:10.1094/pd-80-1430cMartyn, R. D. (1996). Monosporascus Root Rot and Vine Decline: An Emerging Disease of Melons Worldwide. Plant Disease, 80(7), 716. doi:10.1094/pd-80-0716Negreiros, A. M. P., Júnior, R. S., Rodrigues, A. P. M. S., León, M., & Armengol, J. (2019). Prevalent weeds collected from cucurbit fields in Northeastern Brazil reveal new species diversity in the genusMonosporascus. Annals of Applied Biology, 174(3), 349-363. doi:10.1111/aab.12493Picó, B., Roig, C., Fita, A., & Nuez, F. (2007). Quantitative detection of Monosporascus cannonballus in infected melon roots using real-time PCR. European Journal of Plant Pathology, 120(2), 147-156. doi:10.1007/s10658-007-9203-zPivonia, S., Cohen, R., Kigel, J., & Katan, J. (2002). Effect of soil temperature on disease development in melon plants infected by Monosporascus cannonballus. Plant Pathology, 51(4), 472-479. doi:10.1046/j.1365-3059.2002.00731.xPollack, F. G., & Uecker, F. A. (1974). Monosporascus cannonballus an Unusual Ascomycete in Cantaloupe Roots. Mycologia, 66(2), 346. doi:10.2307/3758370Reuveni, R. (1983). The Role ofMonosporascus eutypoidesin a Collapse of Melon Plants in an Arid Area of Israel. Phytopathology, 73(9), 1223. doi:10.1094/phyto-73-1223Roig, C., Fita, A., Ríos, G., Hammond, J. P., Nuez, F., & Picó, B. (2012). Root transcriptional responses of two melon genotypes with contrasting resistance to Monosporascus cannonballus (Pollack et Uecker) infection. BMC Genomics, 13(1), 601. doi:10.1186/1471-2164-13-601Sales Júnior, R., Senhor, R. F., Michereff, S. J., & Negreiros, A. M. P. (2019). REACTION OF MELON GENOTYPES TO THE ROOT´S ROT CAUSED BY Monosporascus. Revista Caatinga, 32(1), 288-294. doi:10.1590/1983-21252019v32n130rcStanghellini, M. E., Alcantara, T. P., & Ferrin, D. M. (2010). Germination ofMonosporascus cannonballusascospores in the rhizosphere: a host-specific response. Canadian Journal of Plant Pathology, 32(3), 402-405. doi:10.1080/07060661.2010.499270Wolff D. W.(1996). Genotype fruit load and temperature affect monosporascus root rot/vine decline symptom expression in melon (Cucumis meloL.). InM. L.Gomez‐Guillamon C.Soria J.Cuartero J. A.Tores &R.Fernandez Munoz(Eds.) Cucurbits toward 2000. Proceedings of the 6th Eucarpia Meeting on Curcurbit Genetics and Breeding(pp. 280–284). Malaga Spain.Wolff, D. W., Leskovar, D. I., Black, M. C., & Miller, M. E. (1997). Differential Fruit Load in Melon (Cucumis melo L.) Affects Shoot and Root Growth, and Vine Decline Symptoms. HortScience, 32(3), 526B-526. doi:10.21273/hortsci.32.3.526bYan, L. Y., Zang, Q. Y., Huang, Y. P., & Wang, Y. H. (2016). First Report of Root Rot and Vine Decline of Melon Caused by Monosporascus cannonballus in Eastern Mainland China. Plant Disease, 100(3), 651-651. doi:10.1094/pdis-06-15-0655-pdnYuste-Lisbona, F. J., López-Sesé, A. I., & Gómez-Guillamón, M. L. (2010). Inheritance of resistance to races 1, 2 and 5 of powdery mildew in the melon TGR-1551. Plant Breeding, 129(1), 72-75. doi:10.1111/j.1439-0523.2009.01655.

    V232D Mutation in Patients With Cystic Fibrosis: Not So Rare, Not So Mild

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    The frequency of some Cystic Fibrosis (CF) Transmembrane Conductance Regulator gene (CFTR) mutations varies between populations. Genetic testing during newborn screening (NBS) for CF can identify less common mutations with low clinical expression in childhood and previously considered mild but not fully characterized, such as the mutation p.Val232Asp (c.695T > A). The aim of this study was to describe CF patients with the V232D mutation. We identify CF children with the V232D mutation detected by NBS and compare them with CF adults with this mutation whose diagnosis was prompted by clinical symptoms in the same period. We studied clinical, biochemical, spirometric, and prognostic features in both populations. NBS program tested 276,523 children during a period of 14 years (2003-2017) and identified 54 cases of CF. Six children (11%) had the V232D mutation. Over the same period, 5 adults (age 37.6 ± 16.29 years old) with symptoms of CF and this mutation were also diagnosed. Follow-up duration was mean 10.1 years for adults and mean 6.5 years for children. In the adult group, lung function was impaired at diagnosis in all patients (Forced Expiratory Volume1-FEV1-67.12% ± 13.09) and worsened in children tested during evolution (FEV1first: 113%; FEV1last: 64%). Pancreatic insufficiency was present in adult group, with recurrent pancreatitis in 1 present. Although with less clinical expression in children, V232D is associated with pulmonary and pancreatic involvement during adulthood and CF cannot be considered mild. This mutation is present in 11% of all patients diagnosed with CF in our region. Its inclusion in some NBS programs should be taken into account in order to improve the prognosis of affected children.S

    Amino acid substitutions associated with treatment failure of hepatitis C virus infection

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    Trabajo presentado en el XVI Congreso Nacional de Virología, celebrado en Málaga (España) del 06 al 09 de septiembre de 2022.Despite the high sustained virological response rates achieved with current directly-acting antiviral agents (DAAs) against hepatitis C virus (HCV), around 2% to 5% of patients do not achieve such a response. Identification of amino acid substitutions associated with treatment failure requires analytical designs, such as subtype-specific ultra-deep sequencing (UDS) methods for HCV characterization and patient management. By deep sequencing analysis of 220 subtyped HCV samples from infected patients who failed therapy, collected from 39 Spanish hospitals, we determined amino acid sequences of the DAA-target proteins NS3, NS5A and NS5B, by UDS of HCV patient samples, in search of resistanceassociated substitutions (RAS). Using this procedure, we have identified six highly represented amino acid substitutions (HRSs) in NS5A and NS5B of HCV, which are not bona fide RAS. They were present frequently in basal and post-treatment virus of patients who failed therapy to different DAA-based therapies. Contrary to several RAS, HRSs belong to the acceptable subset of substitutions according to the PAM250 replacement matrix. Coherently, their mutant frequency, measured by the number of deep sequencing reads within the HCV quasispecies that encode the relevant substitutions, ranged between 90% and 100% in most cases. Also, they have limited predicted disruptive effects on the threedimensional structures of the proteins harboring them. The information on HRSs that will be gathered during sequencing should be relevant not only to help predict treatment outcomes and disease progression but also to further understand HCV population dynamics, which appears much more complex than thought prior to the introduction of deep sequencing.The work at CBMSO was supported by grants SAF2014-52400-R from MINECO, SAF2017-87846-R and BFU2017-91384-EXP MICIU, PI18/00210 from ISCIII, S2013/ABI-2906 (PLATESA) and S2018/BAA-4370 (PLATESA2) from Comunidad de Madrid/FEDER. C.P. is supported by the Miguel Servet program of the ISCIII (CP14/00121 and CPII19/00001), cofinanced by the European Regional Development Fund (ERDF). CIBERehd is funded by ISCIII. Institutional grants from the Fundación Ramón Areces and Banco Santander to the CBMSO are also acknowledged. The team at CBMSO belongs to the Global Virus Network (GVN). The work in Barcelona was supported by ISCIII, cofinanced by ERDF grant number PI19/00301 and by the Centro para el Desarrollo Tecnológico Industrial (CDTI) from the MICIU, grant number IDI20151125. Work at CAB was supported by MINECO grant BIO2016-79618R and PID2019-104903RB-I00 (funded by the EU under the FEDER program) and by the Spanish State research agency (AEI) through project number MDM-2017-0737 Unidad de Excelencia “María de Maeztu”-Centro de Astrobiología (CSIC-INTA). Work at IBMB was supported by MICIN grant BIO2017-83906-P (funded by the EU under the FEDER program). C.G.-C. is supported by predoctoral contract PRE2018-083422 from MICIU. B.M.-G. is supported by predoctoral contract PFIS FI19/00119 from Instituto de Salud Carlos III (Ministerio de Sanidad y Consumo), cofinanced by Fondo Social Europeo (FSE).Peer reviewe

    Boceprevir plus pegylated interferon/ribavirin to re-treat hepatitis C virus genotype 1 in HIV-HCV co-infected patients: final results of the Spanish BOC HIV-HCV Study

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    Introduction Boceprevir (BOC) was one of the first oral inhibitors of hepatitis C virus (HCV) NS3 protease to be developed. This study assessed the safety and efficacy of BOC + pegylated interferon-α2a/ribavirin (PEG-IFN/RBV) in the retreatment of HIV-HCV co-infected patients with HCV genotype 1. Methods This was a phase III prospective trial. HIV-HCV (genotype 1) co-infected patients from 16 hospitals in Spain were included. These patients received 4 weeks of PEG-IFN/RBV (lead-in), followed by response-guided therapy with PEG-IFN/RBV plus BOC (a fixed 44 weeks was indicated in the case of cirrhosis). The primary endpoint was the sustained virological response (SVR) rate at 24 weeks post-treatment. Efficacy and safety were evaluated in all patients who received at least one dose of the study drug. Results From June 2013 to April 2014, 102 patients were enrolled, 98 of whom received at least one treatment dose. Seventy-three percent were male, 34% were cirrhotic, 23% had IL28b CC, 65% had genotype 1a, and 41% were previous null responders. The overall SVR rate was 67%. Previous null-responders and cirrhotic patients had lower SVR rates (57% and 51%, respectively). Seventy-six patients (78%) completed the therapy scheme; the most common reasons for discontinuation were lack of response at week 12 (12 patients) and adverse events (six patients). Conclusions Response-guided therapy with BOC in combination with PEG-IFN/RBV led to an overall SVR rate of 67%, but an SVR rate of only 51% in patients with cirrhosis. The therapy was generally well tolerated. Although the current standards of care do not include BOC + PEG-IFN/RBV, the authors believe that this combination can be beneficial in situations where new HCV direct antiviral agent interferon-free therapies are not available yet

    Espècie porcina: manual lesional de suport per al dictamen de carns fresques

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    Escorxador; Porcí; Carn; Control oficialMatadero; Porcino; Carne; Control oficialSlaughterhouse; Swine; Meat; Official controlLa inspecció post mortem que efectua el col·lectiu de veterinaris oficials d’escorxador és una part important dels controls oficials relatius a la carn fresca i, com a tal, és un dels elements que condiciona que es dictamini com a apta o no per al consum humà i que s’hagin de notificar les malalties de declaració obligatòria. Els escorxadors són entorns òptims per observar i registrar les particularitats de la variada patologia animal que s’hi presenta. Aquesta informació, si és compartida, pot esdevenir una eina molt útil i interessant per al col·lectiu de professionals. En conseqüència, es va crear una comunitat de pràctica (CoP) per a l’espècie porcina. L’autoria d’aquest manual és de veterinaris oficials d’escorxador de la Generalitat de Catalunya. El contingut s’ha volgut transmetre per mitjà de fitxes que contenen informació científica, tècnica i legal per a cada una de les malalties i lesions que s’hi descriuen. Alhora, les fitxes s’il·lustren amb imatges obtingudes als diferents escorxadors de Catalunya. Així, doncs, sabem que els manuals es presenten encara incomplets i, per això, es preveu poder completar-los en futures edicions.La inspección post mortem que efectúa el colectivo de veterinarios oficiales de matadero es una parte importante de los controles oficiales relativos a la carne fresca y, como tal, es uno de los elementos que condiciona que se dictamine como apta o no para el consumo humano y que deban notificarse las enfermedades de declaración obligatoria. Los mataderos son entornos óptimos para observar y registrar las particularidades de la variada patología animal que se presenta. Esta información, si es compartida, puede convertirse en una herramienta muy útil e interesante para el colectivo de profesionales. En consecuencia, se creó una comunidad de práctica (CoP) para la especie porcina. La autoría de este manual es de veterinarios oficiales de matadero de la Generalitat de Catalunya. El contenido se ha querido transmitir por medio de fichas que contienen información científica, técnica y legal para cada una de las enfermedades y lesiones que se describen. Asimismo, las fichas se ilustran con imágenes obtenidas en los diferentes mataderos de Cataluña. Así pues, sabemos que los manuales se presentan todavía incompletos y, por eso, se prevé poder completarlos en futuras ediciones.The post-mortem inspection carried out by the group of official slaughterhouse veterinarians is an important part of the official controls related to fresh meat and, as such, is one of the elements that determines whether or not it is deemed fit for human consumption and Notifiable diseases must be notified. Slaughterhouses are optimal environments to observe and record the particularities of the varied animal pathology that occurs. This information, if shared, can become a very useful and interesting tool for the group of professionals. Accordingly, a community of practice (CoP) for swine was created. The authorship of this manual is official slaughterhouse veterinarians of the Generalitat de Catalunya. The content has been conveyed through sheets containing scientific, technical and legal information for each of the diseases and injuries described. Likewise, the sheets are illustrated with images obtained in the different slaughterhouses in Catalonia. Thus, we know that the manuals are still incomplete and, therefore, it is expected to be able to complete them in future editions

    All-cause mortality in the cohorts of the Spanish AIDS Research Network (RIS) compared with the general population: 1997Ł2010

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    Abstract Background: Combination antiretroviral therapy (cART) has produced significant changes in mortality of HIVinfected persons. Our objective was to estimate mortality rates, standardized mortality ratios and excess mortality rates of cohorts of the AIDS Research Network (RIS) (CoRIS-MD and CoRIS) compared to the general population. Methods: We analysed data of CoRIS-MD and CoRIS cohorts from 1997 to 2010. We calculated: (i) all-cause mortality rates, (ii) standardized mortality ratio (SMR) and (iii) excess mortality rates for both cohort for 100 personyears (py) of follow-up, comparing all-cause mortality with that of the general population of similar age and gender. Results: Between 1997 and 2010, 8,214 HIV positive subjects were included, 2,453 (29.9%) in CoRIS-MD and 5,761 (70.1%) in CoRIS and 294 deaths were registered. All-cause mortality rate was 1.02 (95% CI 0.91-1.15) per 100 py, SMR was 6.8 (95% CI 5.9-7.9) and excess mortality rate was 0.8 (95% CI 0.7-0.9) per 100 py. Mortality was higher in patients with AIDS, hepatitis C virus (HCV) co-infection, and those from CoRIS-MD cohort (1997. Conclusion: Mortality among HIV-positive persons remains higher than that of the general population of similar age and sex, with significant differences depending on the history of AIDS or HCV coinfection

    Population Disequilibrium as Promoter of Adaptive Explorations in Hepatitis C Virus

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    Replication of RNA viruses is characterized by exploration of sequence space which facilitates their adaptation to changing environments. It is generally accepted that such exploration takes place mainly in response to positive selection, and that further diversification is boosted by modifications of virus population size, particularly bottleneck events. Our recent results with hepatitis C virus (HCV) have shown that the expansion in sequence space of a viral clone continues despite prolonged replication in a stable cell culture environment. Diagnosis of the expansion was based on the quantification of diversity indices, the occurrence of intra-population mutational waves (variations in mutant frequencies), and greater individual residue variations in mutant spectra than those anticipated from sequence alignments in data banks. In the present report, we review our previous results, and show additionally that mutational waves in amplicons from the NS5A-NS5B-coding region are equally prominent during HCV passage in the absence or presence of the mutagenic nucleotide analogues favipiravir or ribavirin. In addition, by extending our previous analysis to amplicons of the NS3- and NS5A-coding region, we provide further evidence of the incongruence between amino acid conservation scores in mutant spectra from infected patients and in the Los Alamos National Laboratory HCV data banks. We hypothesize that these observations have as a common origin a permanent state of HCV population disequilibrium even upon extensive viral replication in the absence of external selective constraints or changes in population size. Such a persistent disequilibrium¿revealed by the changing composition of the mutant spectrum¿may facilitate finding alternative mutational pathways for HCV antiviral resistance. The possible significance of our model for other genetically variable viruses is discussed.The work at CBMSO was supported by grants SAF2014-52400-R from Ministerio de Economía y Competitividad (MINECO), SAF2017-87846-R and BFU2017-91384-EXP from Ministerio de Ciencia, Innovación y Universidades (MCIU), PI18/00210 from Instituto de Salud Carlos III, S2013/ABI-2906 (PLATESA from Comunidad de Madrid/FEDER), and S2018/BAA-4370 (PLATESA2 from Comunidad de Madrid/FEDER). C.P. is supported by the Miguel Servet program of the Instituto de Salud Carlos III (CPII19/00001), cofinanced by the European Regional Development Fund (ERDF). CIBERehd (Centro de Investigación en Red de Enfermedades Hepáticas y Digestivas) is funded by Instituto de Salud Carlos III. Institutional grants from the Fundación Ramón Areces and Banco Santander to the CBMSO are also acknowledged. The team at CBMSO belongs to the Global Virus Network (GVN). The work in Barcelona was supported by Instituto de Salud Carlos III, cofinanced by the European Regional Development Fund (ERDF) Grant No. PI19/00301 and by the Centro para el Desarrollo Tecnológico Industrial (CDTI) from the MICIU, Grant No. IDI-20200297. Work at CAB was supported by MINECO grant BIO2016-79618R and PID2019-104903RB-I00 (funded by the EU under the FEDER program) and by the Spanish State research agency (AEI) through project number MDM-2017-0737 Unidad de Excelencia “María de Maeztu”-Centro de Astrobiología (CSIC-INTA). C.G.-C. is supported by predoctoral contract PRE2018-083422 from MCIU. B.M.-G. is supported by predoctoral contract PFIS FI19/00119 from Instituto de Salud Carlos III (Ministerio de Sanidad y Consumo), cofinanced by Fondo Social Europeo (FSE)

    Boceprevir plus pegylated interferon/ribavirin to re-treat hepatitis C virus genotype 1 in HIV-HCV co-infected patients : final results of the Spanish BOC HIV-HCV Study

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    Boceprevir (BOC) was one of the first oral inhibitors of hepatitis C virus (HCV) NS3 protease to be developed. This study assessed the safety and efficacy of BOC + pegylated interferon-α2a/ribavirin (PEG-IFN/RBV) in the retreatment of HIV-HCV co-infected patients with HCV genotype 1. This was a phase III prospective trial. HIV-HCV (genotype 1) co-infected patients from 16 hospitals in Spain were included. These patients received 4 weeks of PEG-IFN/RBV (lead-in), followed by response-guided therapy with PEG-IFN/RBV plus BOC (a fixed 44 weeks was indicated in the case of cirrhosis). The primary endpoint was the sustained virological response (SVR) rate at 24 weeks post-treatment. Efficacy and safety were evaluated in all patients who received at least one dose of the study drug. From June 2013 to April 2014, 102 patients were enrolled, 98 of whom received at least one treatment dose. Seventy-three percent were male, 34% were cirrhotic, 23% had IL28b CC, 65% had genotype 1a, and 41% were previous null responders. The overall SVR rate was 67%. Previous null-responders and cirrhotic patients had lower SVR rates (57% and 51%, respectively). Seventy-six patients (78%) completed the therapy scheme; the most common reasons for discontinuation were lack of response at week 12 (12 patients) and adverse events (six patients). Response-guided therapy with BOC in combination with PEG-IFN/RBV led to an overall SVR rate of 67%, but an SVR rate of only 51% in patients with cirrhosis. The therapy was generally well tolerated. Although the current standards of care do not include BOC + PEG-IFN/RBV, the authors believe that this combination can be beneficial in situations where new HCV direct antiviral agent interferon-free therapies are not available yet
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