Mucous cell types in the branchial epithelium of the euryhaline fish <i>Poecilia vivipara</i>

Saboaia-Moraes, S. M. T.; Hernandez‐Blazquez, Francisco Javier; Mota, Diógenes Luís da; Bittencourt, A. M.

doi:10.1111/j.1095-8649.1996.tb00051.x

Cited by 20 publications

(15 citation statements)

References 11 publications

(12 reference statements)

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“…The result shows positive blue color for acid mucosubstances and magenta or pink-red color for neutral polysaccharides. Moreover, some double-staining positive cells were also observed [20,21]. Here, we histologically examined the effects of glucan and LGG on intestinal immune responses, particularly the mucous cell responses, to oral Aeromonas challenge.…”

Section: Introductionmentioning

confidence: 94%

Immunological effects of glucan and Lactobacillus rhamnosus GG, a probiotic bacterium, on Nile tilapia Oreochromis niloticus intestine with oral Aeromonas challenges

et al. 2010

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The present study histologically examined the effects of glucan-containing and Lactobacillus rhamnosus GG (LGG)-containing diets on intestinal damages inflicted on Nile tilapia by Aeromonas challenges. Tilapia were fed control, glucan, and LGG diets for 2 weeks and were subsequently challenged with Aeromonas. The intestines were then histologically examined at 1, 7, 14, and 21 days post-infection. Mortality following the challenge was lower for the fish fed the glucan and LGG diets. The intestines of these groups also showed increased inflammatory cell infiltration and reduced intestinal damage from Aeromonas. Moreover, inflammatory cell infiltration occurred more rapidly in the glucan-fed than in the LGG-fed fish following the challenge. Before the challenge, the dominant mucous cell was the acid type in all the tests. After the challenge, the main mucus cell type in the proximal intestine of the glucan-fed fish shifted to AB-PAS doublestaining cells, while in the LGG-fed fish, it remained the acid type throughout the test period, and the number of double-staining cells was smaller than in the control fish after the challenge. Thus, the different mucous cell and inflammatory cell responses show that glucan and LGG might have different immunostimulative effects, although they both reduced the intestinal damage following Aeromonas challenges.

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Section: Introductionmentioning

confidence: 94%

Immunological effects of glucan and Lactobacillus rhamnosus GG, a probiotic bacterium, on Nile tilapia Oreochromis niloticus intestine with oral Aeromonas challenges

et al. 2010

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“…The presence of these cells on the leading filament edge appears to aid in more effective distribution of mucus over the gills. Saboya-Moraes et al (1996) recently reported histochemical differences in the MC population of Poecilia vivipara, a euryhaline species, depending on their location on the gill epithelium. No histochemical analysis was done of MCs in this study and, although differences on electrondense packet granules were found in some MCs, as reported for Periophthalmus vulgaris (Welch & Storch, 1976), the MCs of the H. cf.…”

Section: Discussionmentioning

confidence: 99%

Epithelial gill cells in the armored catfish, Hypostomus cf. plecostomus (Loricariidae)

Fernandes

Perna-Martins

2001

Rev. Bras. Biol.

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Epithelial gill cell morphology and distribution were investigated in the armored catfish, Hypostomus cf. plecostomus, which lives in soft ion-poor Brazilian freshwaters. Pavement cells are the most abundant type of cell on both filament and lamellar epithelia and there are a great number of mucous and chloride cells between them. Mucous cells are almost covered by adjacent pavement cells and have large packed granules showing electrondense differences. No mucous cells were found on the lamellar epithelium. Chloride cell were distributed throughout both epithelia and usually have large apical surface facing the external medium and may exhibit short and sparsely distributed microvilli. The presence of chloride cells on the lamellar epithelium may be an adaptation to low ion concentrations in the water, allowing for improved ion-transport capacity of the gill. The large size of these cells increases the water-blood barrier and may affect the transference of respiratory gases. However, the negative effect on the respiratory process may be minimized by this species' ability to resort to atmospheric air to fulfill its oxygen requirements.Key words: gills, epithelium, teleost, loricariid, Hypostomus cf. plecostomus. RESUMOEpitélio branquial de cascudo, Hypostomus cf. plecostomus (Loricariidae)

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“…The fish Poecilia sp., well-known as a guppy, has been used as a model system in ecotoxicological studies due to a high sensitivity towards different pollutants, as well as the small, cheap and easy management in aquariums (Araújo et al, 2001;Dorrington et al, 2012;Sabóia-Moraes et al, 1996;Silva et al, 2002). Recent studies on the GBH toxicity (Rocha et al, 2015;Santos et al, 2017;Souza Filho et al, 2013) together with other ecotoxicological studies (Castro et al, 2004;Rolshausen et al, 2015) chose Poecilia reticulata as the model system.…”

Section: Introductionmentioning

confidence: 99%

Gender‐specific histopathological response in guppies Poecilia reticulata exposed to glyphosate or its metabolite aminomethylphosphonic acid

Antunes

Rocha

Pires

et al. 2017

J of Applied Toxicology

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Ecotoxicity of glyphosate (GLY) and its metabolite aminomethylphosphonic acid (AMPA) was investigated in guppies, Poecilia reticulata. We tested the effects of these chemicals on the gills and liver of both male and female guppies using qualitative and quantitative histopathological analyses associated with histopathological condition indexes. Both genders showed similar median lethal concentration (LC ) at 96 h for GLY (68.78 and 70.87 mg l ) and AMPA (180 and 164.32 mg l ). However, the histopathological assessment of both fish organs exposed to sublethal concentrations of GLY (35 mg l ) and AMPA (82 mg l ) for 96 h showed a tissue- and gender-specific histopathological response. In both exposure assays, fish presented mainly progressive changes, such as proliferation of the interlamellar epithelium, partial and total fusion of secondary lamellae. The liver showed mainly regressive changes, such as steatosis, pyknotic nuclei and high distribution of collagen fibers. Unusually large hepatocytes as degenerated cells were also detected. Histopathological changes in gills were similar for the males and females, but the liver response was different between the genders. The hepatic inflammatory changes were more common in males. The increase in the area of hepatocyte vacuoles is gender dependent with higher values in the male compared to the female guppies exposed to GLY and AMPA. Multiparametric analysis indicated that the male guppies are more sensitive than females, particularly in the presence of AMPA. Our study shows that the histopathological assessment associated with gender-specific response can be successfully used in ecotoxicological assessment of GLY and the metabolite AMPA. Copyright © 2017 John Wiley & Sons, Ltd.

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Mucous cell types in the branchial epithelium of the euryhaline fish Poecilia vivipara

Cited by 20 publications

References 11 publications

Immunological effects of glucan and Lactobacillus rhamnosus GG, a probiotic bacterium, on Nile tilapia Oreochromis niloticus intestine with oral Aeromonas challenges

Immunological effects of glucan and Lactobacillus rhamnosus GG, a probiotic bacterium, on Nile tilapia Oreochromis niloticus intestine with oral Aeromonas challenges

Epithelial gill cells in the armored catfish, Hypostomus cf. plecostomus (Loricariidae)

Gender‐specific histopathological response in guppies Poecilia reticulata exposed to glyphosate or its metabolite aminomethylphosphonic acid

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