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Coscelli GA, Casabonne C, Morón-Alcain E, Arancegui N, Vigliano FA. Aeromonas sobria, an outbreak of natural infection in cultured silver catfish Rhamdia quelen (Quoy & Gaimard, 1824) in Argentina. J Fish Dis 2017; 40:1929-1933. [PMID: 28548705 DOI: 10.1111/jfd.12651] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 03/31/2017] [Accepted: 04/02/2017] [Indexed: 06/07/2023]
Affiliation(s)
- G A Coscelli
- Cátedra de Patología General y Especial Veterinaria, Facultad de Ciencias Veterinarias, Universidad Nacional de Rosario, Casilda, Santa Fe, Argentina
- Centro de Investigaciones en Piscicultura Experimental (CIPEX), Facultad de Ciencias Veterinarias, Universidad Nacional de Rosario, Casilda, Santa Fe, Argentina
| | - C Casabonne
- Área Bacteriología, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Santa Fe, Argentina
| | - E Morón-Alcain
- Centro de Investigaciones en Piscicultura Experimental (CIPEX), Facultad de Ciencias Veterinarias, Universidad Nacional de Rosario, Casilda, Santa Fe, Argentina
- Cátedra de Piscicultura, Facultad de Ciencias Veterinarias, Universidad Nacional de Rosario, Casilda, Santa Fe, Argentina
| | - N Arancegui
- Cátedra de Microbiología y Parasitología, Facultad de Odontología, Universidad Nacional de Rosario, Rosario, Santa Fe, Argentina
| | - F A Vigliano
- Centro de Investigaciones en Piscicultura Experimental (CIPEX), Facultad de Ciencias Veterinarias, Universidad Nacional de Rosario, Casilda, Santa Fe, Argentina
- Cátedra de Piscicultura, Facultad de Ciencias Veterinarias, Universidad Nacional de Rosario, Casilda, Santa Fe, Argentina
- Centro Científico Tecnológico Rosario-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Rosario, Santa Fe, Argentina
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Pereira RT, de Freitas TR, de Oliveira IRC, Costa LS, Vigliano FA, Rosa PV. Endocrine cells producing peptide hormones in the intestine of Nile tilapia: distribution and effects of feeding and fasting on the cell density. Fish Physiol Biochem 2017; 43:1399-1412. [PMID: 28501979 DOI: 10.1007/s10695-017-0380-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Accepted: 04/27/2017] [Indexed: 06/07/2023]
Abstract
Endocrine cells (ECs) act as a luminal surveillance system responding to either the presence or absence of food in the gut through the secretion of peptide hormones. The aim of this study was to analyze the effects of feeding and fasting on the EC peptide-specific distribution along the intestine of Nile tilapia. We assessed the density of ECs producing gastrin (GAS), cholecystokinin-8 (CCK-8), neuropeptide Y (NPY), and calcitonin gene-related peptide (CGRP) in nine segments of the intestine using immunohistochemistry. Our results show that ECs immunoreactive to CCK-8, GAS, NPY, and CGRP can be found along all the intestinal segments sampled, from the midgut to hindgut, although differences in their distribution along the gut were observed. Regarding nutrient status, we found that the anterior segments of the midgut seem to be the main site responding to luminal changes in Nile tilapia. The NPY+ and CGRP+ EC densities increased in the fasted group, while the amount of CCK-8+ ECs were higher in the fed group. No effects of fasting or feeding were found in the GAS+ EC densities. Changes in ECs density were found only at the anterior segments of the intestine which may be due to the correlation between vagus nerve anatomy, EC location, and peptide turnover. Lastly, ECs may need to be considered an active cell subpopulation that may adapt and respond to different nutrient status as stimuli. Due to the complexity of the enteroendocrine system and its importance in fish nutrition, much remains to be elucidated and it deserves closer attention.
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Affiliation(s)
- Raquel Tatiane Pereira
- Department of Animal Science, Federal University of Lavras UFLA, Lavras, Minas Gerais, 37200-000, Brazil.
- Cátedra de Histología y Embriología/Centro de Investigaciones en Piscicultura Experimental, Facultad de Ciencias Veterinarias, Universidad Nacional de Rosario/Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Santa Fe, Argentina.
| | | | | | - Leandro Santos Costa
- Aquaculture Department, Federal University of Minas Gerais UFMG, Belo Horizonte, Minas Gerais, Brazil
| | - Fabricio Andrés Vigliano
- Cátedra de Histología y Embriología/Centro de Investigaciones en Piscicultura Experimental, Facultad de Ciencias Veterinarias, Universidad Nacional de Rosario/Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Santa Fe, Argentina
| | - Priscila Vieira Rosa
- Department of Animal Science, Federal University of Lavras UFLA, Lavras, Minas Gerais, 37200-000, Brazil
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Muñoz L, Weber P, Dressler V, Baldisserotto B, Vigliano FA. Histopathological biomarkers in juvenile silver catfish (Rhamdia quelen) exposed to a sublethal lead concentration. Ecotoxicol Environ Saf 2015; 113:241-247. [PMID: 25521338 DOI: 10.1016/j.ecoenv.2014.11.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 11/27/2014] [Accepted: 11/28/2014] [Indexed: 06/04/2023]
Abstract
The aim of this study was to determine the 96-h lethal concentration (96-h LC50) of lead (Pb) in silver catfish, Rhamdia quelen, and to determine histopathological biomarkers in fish exposed for 96-h to a sublethal concentration at 25% of the LC50. The 96-h LC50 was 108 mgl(-1). In gills, the length and thickness of lamella and thickness of the filament epithelium were significantly higher in fish exposed to Pb for 48-h than in control fish whereas the interlamellar distance decreased. In the liver, the area occupied by lipid droplets and size of hepatocytes showed significantly higher values after 24-h of exposure. The percentage of abnormal renal tubules was higher in fish exposed to Pb, exhibiting a time-dependent increase. These variations in histopathological biomarkers permit the definition of the overall response of R. quelen to Pb and the potential usefulness in the monitoring of Pb contamination.
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Affiliation(s)
- Lautaro Muñoz
- Cátedra de Histología y Embriología, Facultad de Ciencias Veterinarias, Universidad Nacional de Rosario, Bv. Ovidio Lagos y Ruta 33, 2170 Casilda, Argentina; Centro de Investigaciones en Piscicultura Experimental (CIPEX), Facultad de Ciencias Veterinarias, Universidad Nacional de Rosario, Bv. Ovidio Lagos y Ruta 33, 2170 Casilda, Argentina; Centro Científico Tecnológico Rosario, Consejo Nacional de Investigaciones Científicas y Técnicas - CONICET, Ocampo y Esmeralda, Rosario, Argentina.
| | - Paula Weber
- Departamento de Fisiologia e Farmacologia, Universidade Federal de Santa Maria, Avenida Roraima, 1000-Camobi, 97105-900 Santa Maria, RS, Brazil
| | - Valderi Dressler
- Departamento de Química, Universidade Federal de Santa Maria, Avenida Roraima, 1000-Camobi, 97105-900 Santa Maria, RS, Brazil
| | - Bernardo Baldisserotto
- Departamento de Fisiologia e Farmacologia, Universidade Federal de Santa Maria, Avenida Roraima, 1000-Camobi, 97105-900 Santa Maria, RS, Brazil
| | - Fabricio Andrés Vigliano
- Cátedra de Histología y Embriología, Facultad de Ciencias Veterinarias, Universidad Nacional de Rosario, Bv. Ovidio Lagos y Ruta 33, 2170 Casilda, Argentina; Centro de Investigaciones en Piscicultura Experimental (CIPEX), Facultad de Ciencias Veterinarias, Universidad Nacional de Rosario, Bv. Ovidio Lagos y Ruta 33, 2170 Casilda, Argentina; Centro Científico Tecnológico Rosario, Consejo Nacional de Investigaciones Científicas y Técnicas - CONICET, Ocampo y Esmeralda, Rosario, Argentina
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Hernández DR, Vigliano FA, Sánchez S, Bermúdez R, Domitrovic HA, Quiroga MI. Neuroendocrine system of the digestive tract in Rhamdia quelen juvenile: an immunohistochemical study. Tissue Cell 2012; 44:220-6. [PMID: 22537686 DOI: 10.1016/j.tice.2012.03.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2011] [Revised: 03/27/2012] [Accepted: 03/27/2012] [Indexed: 11/25/2022]
Abstract
In this work, an immunohistochemical study was performed to determine the distribution and relative frequencies of some neuromodulators of the digestive tract of silver catfish (Rhamdia quelen). The digestive tract of silver catfish was divided into six portions; the oesophagus, stomach, intestine (ascendant, descendant and convoluted segments), and rectum. Immunohistochemical method using a pool of specific antisera against-gastrin, -cholecystokinin-8, -leu-enkephalin, -neuropeptide Y, -calcitonin gene-related peptide (CGRP), and -vasoactive intestinal peptide (VIP) was employed. Immunoreactivity to all antisera was identified in neuroendocrine cells (NECs) localized in the gut epithelium, although no reaction was observed in the oesophagus or stomach. The morphology of NECs immunopositive to each antibody was similar. They were slender in shape, with basally located nucleus, and their main axis perpendicular to the basement membrane. The number of NECs immunoreactive to all antisera was higher in the ascendant and descendant intestine, exhibiting a decreasing trend toward distal segments of the gut. In addition, immunoreactivity to CGRP and VIP was observed in the myenteric plexus and nerve fibers distributed in the mucosal, submucosal and muscular layers. The higher number of immunopositive NECs in the ascendant and descendant intestine may indicate the primary role of these segments in the control of food intake by means of orexigenic and anorexigenic peripheral signals.
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Affiliation(s)
- D R Hernández
- Northeast Institute of Ichthyology, School of Veterinary Sciences, Northeast National University, Sargento Cabral 2139-3400-Corrientes, Argentina.
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Vigliano FA, Losada AP, Castello M, Bermúdez R, Quiroga MI. Morphological and immunohistochemical characterisation of the thymus in juvenile turbot (Psetta maxima, L.). Cell Tissue Res 2011; 346:407-16. [DOI: 10.1007/s00441-011-1282-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2011] [Accepted: 10/24/2011] [Indexed: 11/30/2022]
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Vigliano FA, Marcaccini AJ, Sarradell J, Bermúdez R, Quiroga MI. First description of an olfactory neuroblastoma in goldfish Carassius auratus: a case report. Dis Aquat Organ 2011; 96:61-68. [PMID: 21991666 DOI: 10.3354/dao02383] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
An external pinkish growing mass that emerged from the right nostril of an adult goldfish Carassius auratus L. was evaluated by means of light microscopy and immunohistochemistry. The neoplasm presented a well-developed fibrovascular stroma associated with solid cell nests and a large number of Flexner-Wintersteiner rosettes. Myelinated fibres were observed around them. Neoplastic cells showed a prominent degree of nuclear atypia and low mitotic activity. The latter was in agreement with the low reactivity of tumour cells to anti-proliferating cell nuclear antigen antibody. Immunohistochemistry also revealed anti-neuronal nitric oxide synthase, anti-S100 protein, antineuropeptide Y, and anti-cytokeratin immunoreactivity in tumour cells as well as in normal olfactory epithelium of goldfish control sections. Histopathological and immunohistochemical findings strongly suggest a diagnosis of an olfactory neuroblastoma (ONB). To our knowledge this is the first description of ONB in goldfish.
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Affiliation(s)
- F A Vigliano
- Cátedra de Histología y Embriología, Facultad de Ciencias Veterinarias, Universidad Nacional de Rosario, S2170HGJ Casilda, Argentina.
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Vigliano FA, Muñoz L, Hernández D, Cerutti P, Bermúdez R, Quiroga MI. An immunohistochemical study of the gut neuroendocrine system in juvenile pejerrey Odontesthes bonariensis (Valenciennes). J Fish Biol 2011; 78:901-911. [PMID: 21366580 DOI: 10.1111/j.1095-8649.2011.02912.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
In this study, several neuropeptides were identified by immunohistochemistry in neuroendocrine cells (NEC) located in the gut epithelium and nerve cell bodies of the enteric nervous system of pejerrey Odontesthes bonariensis, a species that is a promising candidate for intensive aquaculture. The neuropeptides involved in orexigenic or anorexigenic action, i.e. gastrin, cholecystokinin-8, neuropeptide Y and calcitonin gene-related peptide (CGRP), displayed a significantly higher number of immunoreactive NECs in the anterior intestine, suggesting that this region of the gut plays an important role in the peripheral control of food intake. On the other hand, leu-enkephalin and vasoactive intestinal peptide (VIP), both associated with the modulation of the enteric immune system, showed no significant variations in the mean value of immunopositive NECs between the anterior and posterior intestine. This may indicate that their activity is required at a similar level along the entire gut. In addition, CGRP and VIP-immunoreactive neurons and nerve fibres were observed in the myenteric plexus, which might exert synergistic effects with the neuropeptides immunolocalized in NECs.
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Affiliation(s)
- F A Vigliano
- Cátedra de Histología y Embriología, Facultad de Ciencias Veterinarias, Universidad Nacional de Rosario, Bv. Ovidio Lagos y Ruta 33, S2170HGJ, Casilda, Argentina.
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Vigliano FA, Bermúdez R, Nieto JM, Quiroga MI. Development of rodlet cells in the gut of turbot (Psetta maxima L.): relationship between their morphology and S100 protein immunoreactivity. Fish Shellfish Immunol 2009; 26:146-153. [PMID: 19042139 DOI: 10.1016/j.fsi.2008.02.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2007] [Revised: 02/26/2008] [Accepted: 02/27/2008] [Indexed: 05/27/2023]
Abstract
Rodlet cells are an enigmatic cell type described in tissues of both marine and freshwater teleosts. Although their structure is well established, up to date their function remains subject of debate. However, there is consensus among the majority of researchers that rodlet cells play an important role within immune system, and this function is probably related with the release of rodlets due to contractile capability of their fibrous layer. Regulation of the contraction mechanism would require proteins that modulate Ca(++) intracellular concentration to be expressed in rodlet cells. We performed a morphological and immunohistochemical study at light and electron microscopy levels to assess S100 protein immunoreactivity in developing rodlet cells. Immature stages did not exhibit immunoreactive signal; however, immunoreactivity was observed in the fibrous layer of both transitional and mature rodlet cells. The latter stage also showed immunosignal within the rodlets. These findings suggest a clear association between S100 protein expression and rodlet cell development that could be linked to the regulation of rodlet activity and contractile property of their fibrous layer. Furthermore, S100 protein antibody constitutes a novel marker for rodlet cells that could be used in future studies of this particular cell type.
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Affiliation(s)
- F A Vigliano
- Cátedra de Histología y Embriología, Facultad de Ciencias Veterinarias, Universidad Nacional de Rosario, Casilda, Argentina.
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Vigliano FA, Alemañ N, Quiroga MI, Nieto JM. Ultrastructural Characterization of Gills in Juveniles of the Argentinian Silverside, Odontesthes bonariensis (Valenciennes, 1835) (Teleostei: Atheriniformes). Anat Histol Embryol 2006; 35:76-83. [PMID: 16542171 DOI: 10.1111/j.1439-0264.2005.00640.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An ultrastructural study was performed on the gills of juvenile Argentinian silverside, Odontesthes bonariensis. The gills are composed of two sets of four holobranchs and, in turn, each holobranch consists of a gill arch and two rows of caudolaterally projecting branchial filaments. From the dorsal and ventral surfaces of each filament, branchial lamellae radiate out as foldings of the epithelial layer. Gill rakers are present on each of the gill arches, on the anteromedial side of the arch opposite to the filaments. Gill rakers, gill arches and branchial filaments are covered by a stratified epithelium, whereas branchial lamellae essentially consist of a thin epithelial envelope containing capillaries. In the stratified epithelium, mucous cells, rodlet cells, granular cells, pavement epithelial cells and mitochondria-rich cells are identified. The thin epithelium that lines the lamellae comprises two cell types, outer and inner epithelial cells, and the capillary walls on the inside of the epithelial envelope are defined by pillar cells. The ultrastructure of all these cell types is described and our findings are discussed in light of the existing data on fish gill morphology. In the gills of juvenile Argentinian silverside is of particular interest the characteristics showed by mitochondria-rich cells, such as their arrangement in clusters of 2-3 cells and their small and depressed surface in contact with the aquatic milieu, features which strongly resemble those of euryhaline species.
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Affiliation(s)
- F A Vigliano
- Department of Histology and Embryology, School of Veterinary Sciences, National University of Rosario, S2170HGJ, CC 166 Casilda, República Argentina.
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