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Author Itziar Estensoro

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Water temperature, time of exposure and population density are key parameters in Enteromyxum leei fish-to-fish experimental transmission.

Amparo Picard-Sánchez, Itziar Estensoro, Raquel Del Pozo, Oswaldo R Palenzuela, Maria Carla Piazzon, Ariadna Sitjà-Bobadilla,

Enteromyxum leei is a myxozoan histozoic parasite that infects the intestine of several teleost fish species. In gilthead sea bream (Sparus aurata), it provokes a chronic disease, entailing anorexia, delayed growth, reduced marketability and mortality. Direct fish-to-fish transmission, relevant in aquaculture conditions, has been demonstrated for E. leei via effluent, cohabitation, ... Read more >>

J. Fish Dis. (Journal of fish diseases)
[2020, 43(4):491-502]

Cited: 0 times

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Effects of Enteromyxum spp. (Myxozoa) infection in the regulation of intestinal E-cadherin: Turbot against gilthead sea bream.

Paolo Ronza, Itziar Estensoro, Roberto Bermúdez, Ana Paula Losada, Gregorio Pérez-Cordón, Belén G Pardo, Ariadna Sitjà-Bobadilla, Mª Isabel Quiroga,

Enteromyxoses are relevant diseases for turbot and gilthead sea bream aquaculture. The myxozoan parasites invade the intestinal mucosa, causing a cachectic syndrome associated with intestinal barrier alteration; nonetheless, their pathological impact is different. Turbot infected by Enteromyxum scophthalmi develop more severe intestinal lesions, reaching mortality rates of 100%, whereas in ... Read more >>

J. Fish Dis. (Journal of fish diseases)
[2020, 43(3):337-346]

Cited: 0 times

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Acquired protective immune response in a fish-myxozoan model encompasses specific antibodies and inflammation resolution.

Amparo Picard-Sánchez, Itziar Estensoro, Raquel Del Pozo, M Carla Piazzon, Oswaldo Palenzuela, Ariadna Sitjà-Bobadilla,

The myxozoan parasite Enteromyxum leei causes chronic enteritis in gilthead sea bream (GSB, Sparus aurata) leading to intestinal dysfunction. Two trials were performed in which GSB that had survived a previous infection with E. leei (SUR), and naïve GSB (NAI), were exposed to water effluent containing parasite stages. Humoral factors ... Read more >>

Fish Shellfish Immunol. (Fish & shellfish immunology)
[2019, 90:349-362]

Cited: 2 times

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Hints on T cell responses in a fish-parasite model: Enteromyxum leei induces differential expression of T cell signature molecules depending on the organ and the infection status.

M Carla Piazzon, Itziar Estensoro, Josep A Calduch-Giner, Raquel Del Pozo, Amparo Picard-Sánchez, Jaume Pérez-Sánchez, Ariadna Sitjà-Bobadilla,

BACKGROUD:Enteromyxum leei is a myxozoan parasite that produces a slow-progressing intestinal disease. This parasite invades the paracellular space of the intestinal epithelium and progresses from the posterior to the anterior intestine. The aim of the present study was to gain insights into fish T cell responses in the gilthead sea ... Read more >>

Parasit Vectors (Parasites & vectors)
[2018, 11(1):443]

Cited: 3 times

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Dysregulation of B Cell Activity During Proliferative Kidney Disease in Rainbow Trout.

Beatriz Abos, Itziar Estensoro, Pedro Perdiguero, Marc Faber, Yehfang Hu, Patricia Díaz Rosales, Aitor G Granja, Christopher J Secombes, Jason W Holland, Carolina Tafalla,

Proliferative kidney disease (PKD) is a widespread disease caused by the endoparasite Tetracapsuloides bryosalmonae (Myxozoa: Malacosporea). Clinical disease, provoked by the proliferation of extrasporogonic parasite stages, is characterized by a chronic kidney pathology with underlying transcriptional changes indicative of altered B cell responses and dysregulated T-helper cell-like activities. Despite the ... Read more >>

Front Immunol (Frontiers in immunology)
[2018, 9:1203]

Cited: 4 times

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Impact of low fish meal and fish oil diets on the performance, sex steroid profile and male-female sex reversal of gilthead sea bream (Sparus aurata) over a three-year production cycle

Paula Simó-Mirabet, Alicia Felip, Ariadna Sitjà-Bobadilla, Itziar Estensoro, Jaume Pérez-Sánchez, Josep Calduch-Giner, Juan Antonio Martos-Sitcha, Mónica Puyalto, Vasileios Karalazos, Verónica de las Heras,

Juveniles of the protandrous hermaphrodite gilthead sea bream (Sparus aurata) were fed from early life stages to completion of sex maturation with plant-based diets formulated by BioMar. Total fish meal (FM) was included at 25% in the control diet (D1) and at 5% in the other three diets (D2, D3, ... Read more >>

Aquaculture (Aquaculture (Amsterdam, Netherlands))
[2018, 490:64-74]

Cited: 4 times

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Under control: how a dietary additive can restore the gut microbiome and proteomic profile, and improve disease resilience in a marine teleostean fish fed vegetable diets.

María Carla Piazzon, Josep Alvar Calduch-Giner, Belén Fouz, Itziar Estensoro, Paula Simó-Mirabet, Mónica Puyalto, Vasileios Karalazos, Oswaldo Palenzuela, Ariadna Sitjà-Bobadilla, Jaume Pérez-Sánchez,

<label>BACKGROUND</label>The constant increase of aquaculture production and wealthy seafood consumption has forced the industry to explore alternative and more sustainable raw aquafeed materials, and plant ingredients have been used to replace marine feedstuffs in many farmed fish. The objective of the present study was to assess whether plant-based diets can ... Read more >>

Microbiome (Microbiome)
[2017, 5(1):164]

Cited: 16 times

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Dietary Butyrate Helps to Restore the Intestinal Status of a Marine Teleost (Sparus aurata) Fed Extreme Diets Low in Fish Meal and Fish Oil.

Itziar Estensoro, Gabriel Ballester-Lozano, Laura Benedito-Palos, Fabian Grammes, Juan Antonio Martos-Sitcha, Liv-Torunn Mydland, Josep Alvar Calduch-Giner, Juan Fuentes, Vasileios Karalazos, Álvaro Ortiz, Margareth Øverland, Ariadna Sitjà-Bobadilla, Jaume Pérez-Sánchez,

There is a constant need to find feed additives that improve health and nutrition of farmed fish and lessen the intestinal inflammation induced by plant-based ingredients. The objective of this study was to evaluate the effects of adding an organic acid salt to alleviate some of the detrimental effects of ... Read more >>

PLoS ONE (PloS one)
[2016, 11(11):e0166564]

Cited: 14 times

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Comprehensive biometric, biochemical and histopathological assessment of nutrient deficiencies in gilthead sea bream fed semi-purified diets - CORRIGENDUM.

Gabriel F Ballester-Lozano, Laura Benedito-Palos, Itziar Estensoro, Ariadna Sitjà-Bobadilla, Sadasivam Kaushik, Jaume Pérez-Sánchez,

Br. J. Nutr. (The British journal of nutrition)
[2016, 116(11):1996]

Cited: 0 times

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Immunity to gastrointestinal microparasites of fish.

Ariadna Sitjà-Bobadilla, Itziar Estensoro, Jaume Pérez-Sánchez,

Fish intestinal parasites cause direct mortalities and also morbidity, poor growth, higher susceptibility to opportunistic pathogens and lower resistance to stress. This review is focused on microscopic parasites (Protozoa and Metazoa) that invade the gastrointestinal tract of fish. Intracellular parasites (mainly Microsporidia and Apicomplexa) evoke almost no host immune reaction ... Read more >>

Dev. Comp. Immunol. (Developmental and comparative immunology)
[2016, 64:187-201]

Cited: 6 times

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Comprehensive biometric, biochemical and histopathological assessment of nutrient deficiencies in gilthead sea bream fed semi-purified diets.

Gabriel F Ballester-Lozano, Laura Benedito-Palos, Itziar Estensoro, Ariadna Sitjà-Bobadilla, Sadasivam Kaushik, Jaume Pérez-Sánchez,

Seven isoproteic and isolipidic semi-purified diets were formulated to assess specific nutrient deficiencies in sulphur amino acids (SAA), n-3 long-chain PUFA (n-3 LC-PUFA), phospholipids (PL), P, minerals (Min) and vitamins (Vit). The control diet (CTRL) contained these essential nutrients in adequate amounts. Each diet was allocated to triplicate groups of ... Read more >>

Br. J. Nutr. (The British journal of nutrition)
[2015, 114(5):713-726]

Cited: 6 times

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Effects of dietary NEXT ENHANCE®150 on growth performance and expression of immune and intestinal integrity related genes in gilthead sea bream (Sparus aurata L.).

Jaume Pérez-Sánchez, Laura Benedito-Palos, Itziar Estensoro, Yiannis Petropoulos, Josep Alvar Calduch-Giner, Craig L Browdy, Ariadna Sitjà-Bobadilla,

Gilthead sea bream juveniles were fed different doses (0, 50, 100, 200, 300 ppm) of NEXT ENHANCE®150 (NE) for 9 weeks. Feed gain ratio (FGR) was improved by a 10% with all the doses, but feed intake decreased in a dose dependent manner. The optimum inclusion level to achieve maximum ... Read more >>

Fish Shellfish Immunol. (Fish & shellfish immunology)
[2015, 44(1):117-128]

Cited: 11 times

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Interleukin gene expression is strongly modulated at the local level in a fish-parasite model.

Gregorio Pérez-Cordón, Itziar Estensoro, Laura Benedito-Palos, Josep Alvar Calduch-Giner, Ariadna Sitjà-Bobadilla, Jaume Pérez-Sánchez,

The goal of this work was to identify interleukin (IL)-related genes in the gilthead sea bream (GSB) (Sparus aurata L.) and how they are modulated by the parasite Enteromyxum leei, a myxozoan that causes severe enteritis with a strong inflammatory response. A Blast-X search of our transcriptomic GSB database (www.nutrigroup-iats.org/seabreamdb) ... Read more >>

Fish Shellfish Immunol. (Fish & shellfish immunology)
[2014, 37(2):201-208]

Cited: 23 times

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Modulation of leukocytic populations of gilthead sea bream (Sparus aurata) by the intestinal parasite Enteromyxum leei (Myxozoa: Myxosporea).

Itziar Estensoro, Iván Mulero, María J Redondo, Pilar Alvarez-Pellitero, Victoriano Mulero, Ariadna Sitjà-Bobadilla,

SUMMARY The cellular mucosal and systemic effectors of gilthead sea bream (GSB) (Sparus aurata) involved in the acute immune response to the intestinal parasite Enteromyxum leei were studied in fish experimentally infected by the anal route. In the intestinal inflammatory infiltrates and in lymphohaematopoietic organs (head kidney and spleen) of ... Read more >>

Parasitology (Parasitology)
[2014, 141(3):425-440]

Cited: 12 times

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Mucins as diagnostic and prognostic biomarkers in a fish-parasite model: transcriptional and functional analysis.

Jaume Pérez-Sánchez, Itziar Estensoro, María José Redondo, Josep Alvar Calduch-Giner, Sadasivam Kaushik, Ariadna Sitjà-Bobadilla,

Mucins are O-glycosylated glycoproteins present on the apex of all wet-surfaced epithelia with a well-defined expression pattern, which is disrupted in response to a wide range of injuries or challenges. The aim of this study was to identify mucin gene sequences of gilthead sea bream (GSB), to determine its pattern ... Read more >>

PLoS ONE (PloS one)
[2013, 8(6):e65457]

Cited: 31 times

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Effects of Enteromyxum leei (Myxozoa) infection on gilthead sea bream (Sparus aurata) (Teleostei) intestinal mucus: glycoprotein profile and bacterial adhesion.

Itziar Estensoro, Verena Jung-Schroers, Pilar Álvarez-Pellitero, Dieter Steinhagen, Ariadna Sitjà-Bobadilla,

The intestinal myxosporean parasite Enteromyxum leei causes severe desquamative enteritis in gilthead sea bream (Sparus aurata) (Teleostei) that impairs nutrient absorption causing anorexia and cachexia. In fish, as in terrestrial vertebrates, intestinal goblet cells are responsible for the adherent mucus secretion overlying epithelial cells, which constitutes a first line of ... Read more >>

Parasitol. Res. (Parasitology research)
[2013, 112(2):567-576]

Cited: 12 times

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Antigenic characterization of Enteromyxum leei (Myxozoa: Myxosporea).

Itziar Estensoro, Pilar Álvarez-Pellitero, Ariadna Sitjà-Bobadilla,

Enteromyxum leei, an intestinal myxozoan parasite affecting a wide range of fish, was partially purified, and the immunogenic composition of its glycoproteins as well as the proteolytic activity were studied. Parasite extracts, mainly containing spores, were separated by SDS-PAGE, and thereafter, immunoblots were carried out with a polyclonal antiserum (Pab) ... Read more >>

Dis. Aquat. Org. (Diseases of aquatic organisms)
[2013, 106(2):149-162]

Cited: 3 times

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Deep sequencing for de novo construction of a marine fish (Sparus aurata) transcriptome database with a large coverage of protein-coding transcripts.

Josep A Calduch-Giner, Azucena Bermejo-Nogales, Laura Benedito-Palos, Itziar Estensoro, Gabriel Ballester-Lozano, Ariadna Sitjà-Bobadilla, Jaume Pérez-Sánchez,

BACKGROUND: The gilthead sea bream (Sparus aurata) is the main fish species cultured in the Mediterranean area and constitutes an interesting model of research. Nevertheless, transcriptomic and genomic data are still scarce for this highly valuable species. A transcriptome database was constructed by de novo assembly of gilthead sea bream ... Read more >>

BMC Genomics (BMC genomics)
[2013, 14:178]

Cited: 34 times

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Effect of nutrition and Enteromyxum leei infection on gilthead sea bream Sparus aurata intestinal carbohydrate distribution.

Itziar Estensoro, María José Redondo, Beatriz Salesa, Savasidam Kaushik, Jaume Pérez-Sánchez, Ariadna Sitjà-Bobadilla,

The effect of a practical plant protein-based diet containing vegetable oils (VO) as the major lipid source on the mucosal carbohydrate pattern of the intestine was studied in gilthead sea bream Sparus aurata challenged with the myxosporean parasite Enteromyxum leei. Fish fed for 9 mo either a fish oil (FO) ... Read more >>

Dis. Aquat. Org. (Diseases of aquatic organisms)
[2012, 100(1):29-42]

Cited: 9 times

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Modulation of the IgM gene expression and IgM immunoreactive cell distribution by the nutritional background in gilthead sea bream (Sparus aurata) challenged with Enteromyxum leei (Myxozoa).

Itziar Estensoro, Josep A Calduch-Giner, Sadasivam Kaushik, Jaume Pérez-Sánchez, Ariadna Sitjà-Bobadilla,

The aim of the present work was to determine if a plant protein-based diet containing vegetable oils (VO) as the major lipid source could alter the distribution of IgM immunoreactive cells (IRCs) and the IgM expression pattern in the intestine and haematopoietic tissues of gilthead sea bream (GSB) (Sparus aurata) ... Read more >>

Fish Shellfish Immunol. (Fish & shellfish immunology)
[2012, 33(2):401-410]

Cited: 20 times

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The nutritional background of the host alters the disease course in a fish-myxosporean system.

Itziar Estensoro, Laura Benedito-Palos, Oswaldo Palenzuela, Sadasivam Kaushik, Ariadna Sitjà-Bobadilla, Jaume Pérez-Sánchez,

The aim of the present work was to determine if a practical plant protein-based diet containing vegetable oils (VO) as the major lipid source could alter the disease course when challenged with the myxosporean Enteromyxum leei, a wide-spread parasite in the Mediterranean basin causing heavy economic losses. Gilthead sea bream ... Read more >>

Vet. Parasitol. (Veterinary parasitology)
[2011, 175(1-2):141-150]

Cited: 16 times

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Novel horizontal transmission route for Enteromyxum leei (Myxozoa) by anal intubation of gilthead sea bream Sparus aurata.

Itziar Estensoro, Ma José Redondo, Pilar Alvarez-Pellitero, Ariadna Sitjà-Bobadilla,

The aim of the present study was to determine whether Enteromyxum leei, one of the most threatening parasitic diseases in Mediterranean fish culture, could be transmitted by peranal intubation in gilthead sea bream Sparus aurata L. Fish were inoculated either orally or anally with intestinal scrapings of infected fish in ... Read more >>

Dis. Aquat. Org. (Diseases of aquatic organisms)
[2010, 92(1):51-58]

Cited: 17 times

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