Response of mucous cells of the gills of traíra (Hoplias malabaricus) and jeju (Hoplerythrinus unitaeniatus) (Teleostei: Erythrinidae) to hypo- and hyper-osmotic ion stress

Moron, Sandro Estevan; Andrade, Cássio Arilson de; Fernandes, Marisa Narciso

doi:10.1590/s1679-62252009000300017

Cited by 29 publications

(18 citation statements)

References 40 publications

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“…PVCs have large polygonal surfaces covered by microridges generated by folds of the apical membrane. These may serve to anchor mucus on the epithelial surface (Moron et al 2009). They also increase gill surface area by more than twofold (Olson and Fromm 1973), providing a reserve of apical membrane (Avella et al 2009) that allows them to expand or shrink, covering and uncovering adjacent MRCs and MCs in various circumstances Daborn et al 2001;Matey et al 2008).…”

Section: Introductionmentioning

confidence: 99%

“…Environmental stressors cause the release of stored mucous granules by exocytosis, and gel-like mucus spreads along the gills (Verdugo 1991). This highly anionic, negatively charged medium may contribute indirectly to ion uptake by creating a microenvironment rich in cations, which is thought to facilitate active uptake and decrease passive ion loss (Handy 1989;Shephard 1994;Roberts and Powell 2003;Moron et al 2009). …”

Section: Introductionmentioning

confidence: 99%

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Gill morphology and acute hypoxia: responses of mitochondria-rich, pavement, and mucous cells in the Amazonian oscar (Astronotus ocellatus) and the rainbow trout (Oncorhynchus mykiss), two species with very different approaches to the osmo-respiratory compromise

et al. 2011

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The hypoxia-intolerant rainbow trout (Oncorhynchus mykiss (Walbaum, 1792)) exhibits increased branchial ion permeability and Na + influx during acute exposure to moderate hypoxia (PO2 = 80 torr; 1 torr = 133.3224 Pa), manifesting the usual trade-off between gas exchange and electrolyte conservation. In contrast, the hypoxia-tolerant oscar (Astronotus ocellatus (Agassiz, 1831)) is unusual in exhibiting decreased branchial ion permeability to ions and Na + influx during acute exposure to severe hypoxia (PO2 = 10-20 torr). These different physiological approaches to the osmo-respiratory compromise correlate with rapid, oppositely directed changes in gill morphology. In oscar, pavement cells (PVCs) expanded, partially covering neighboring mitochondria-rich cells (MRCs), which were recessed and reduced in size. Those remaining open were transformed from "shallow-basin" to "deep-hole" forms with smaller openings, deeper apical crypts, and smaller numbers of subapical microvesicles, changes that were largely reversed during normoxic recovery. In contrast, moderate hypoxia caused outward bulging of MRCs in rainbow trout with increases in size, surface exposure, and number of subapical microvesicles, accompanied by PVC retraction. These changes were partially reversed during normoxic recovery. In both rainbow trout and oscar, hypoxia caused discharge of mucus from enlarged mucous cells (MCs). Rapid, divergent morphological changes play an important role in explaining two very different physiological approaches to the osmo-respiratory compromise.Résumé : La truite arc-en-ciel (Oncorhynchus mykiss (Walbaum, 1792)) qui est intolérante à l'hypoxie montre une perméa-bilité branchiale accrue aux ions et un influx de Na + durant une exposition aiguë à une hypoxie modérée (PO 2 = 80 torr; 1 torr = 133.3224 Pa), ce qui représente le compromis habituel entre les échanges gazeux et la conservation des électrolytes. À l'opposé, l'oscar (Astronotus ocellatus (Agassiz, 1831)), qui est tolérant à l'hypoxie, réagit de façon inhabituelle par une diminution de la perméabilité des branchies aux ions et de l'influx de Na + durant une exposition aiguë à une hypoxie sévère (PO 2 = 10-20 torr). Il y a une corrélation entre ces approches physiologiques différentes au compromis osmo-respiratoire et les changements rapides de la morphologie des branchies dans des directions opposées. Chez l'oscar, les cellules pavimenteuses (PVC) prennent de l'expansion et couvrent partiellement les cellules riches en mitochondries (MRC) voisines qui se rétractent et rapetissent. Celles qui restent ouvertes se transforment d'une forme de « bassin évasé » à une de « dépression profonde » avec des ouvertures réduites, de cryptes apicales plus accentuées et un nombre restreint de microvésicules subapicales, des modifications qui en grande partie régressent durant le rétablissement de la normoxie. Au contraire, l'hypoxie modérée chez la truite arc-en-ciel cause un ballonnement des MRC vers l'extérieur et une augmentation de taille, de la surface d'exposition et du nom...

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Gill morphology and acute hypoxia: responses of mitochondria-rich, pavement, and mucous cells in the Amazonian oscar (Astronotus ocellatus) and the rainbow trout (Oncorhynchus mykiss), two species with very different approaches to the osmo-respiratory compromise

et al. 2011

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“…The presence of chloride cells suggests that the gill of this fish participates in osmo-regulation other than respiration. The presence of mucous cells in gill varies according to aquatic conditions [20]. Mucous cells are observed in higher number in the primary lamellae than in the secondary lamellae [21,22].…”

Section: Discussionmentioning

confidence: 99%

Histology and Surface Ultra-Structure of the Gill of A Minor Carp, <i>Labeo bata</i> (Hamilton)

Samajdar

Mandal²

2017

J. Sci. Res.

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The histology and surface ultra-structures of the gill epithelium of Labeo bata has been examined through light and electron microscopy. Gill arches bear double rows of primary lamellae and each primary lamella is provided with two rows of delicate rectangular secondary lamellae on its upper and lower surfaces. Gill arches and filaments are lined by thick stratified epithelium while the epithelium of secondary lamella is made up of thin single layered pavement cells. The thin epithelium is supported and kept apart from each other by the pillar cells. The pavement cells are polygonal with well-defined cell boundary and microridges on its apical surface. The epithelial cells are interspersed by large chloride cells located at the base of secondary lamellae and PAS positive mucous cells. Mucous cells are found abundant at the base and tip of the primary lamellae. Taste buds are found on the concave anterior faces of gill arches. The short and soft gill rakers are covered with stratified epithelium. This finding demonstrated that the fish has well developed respiratory system matching to its active life.

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“…Mucins were demonstrated using Alcian blue (AB) at pH 1. 0 (sulphated acid glycoprotein, Lev and Spicer, 1964) and pH 2.5 (acid glycoprotein, Mowry, 1956) and, periodic acid-Schiff (neutral glycoprotein, McManaus, 1948). In addition, the PAS technique was employed in combination with AB pH 1.0 and pH 2.5 to the identification of MC containing more than one type of glycoprotein.…”

Section: Methodsmentioning

confidence: 99%

“…Changes in the density of the gills' mucous cells have been considered as a response to the changes in the ion concentration in water such as sodium, calcium and chloride (Perry and Wood, 1985;Laurent and Hebibi, 1989;Moron et al, 2009) and xenobiotics (Wendelaar Bonga et al, 1989).…”

mentioning

confidence: 99%

Identification of glycoproteins in mucous cells of the gill epithelium of Colossoma macropomum after exposure to organophosphate

Moron

Matos

Ramos

et al. 2018

Arq. Bras. Med. Vet. Zootec.

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Identification of glycoproteins in mucous cells of the gill epithelium ABSTRACTThe use of organophosphates has been recommended for fish, especially the trichlorfon to control parasites. Colossoma macropomum were exposed to trichlorfon during 96 hours and of total number of mucous cells decreased in the number of cells when compared to the control group. Glycoproteins acid, acid sulphated and neutral was identified in the gill epithelium. Neutra glycoprotein had a significant decrease between control and the sublethal concentration. Acid glycoprotein didn't have any significant difference between the groups exposed to the trichlorfon, compared to the control group. Sulfated acidic glycoprotein in the group exposed to the trichlorfon was noticed a reduction in number of mucosal cells acidic sulphated. The differences between density cell and production glycoprotein was a response of these cells after exposure to xenobiotic. The reduction of neutral, acid and sulphated acid glycoprotein in the MC of the gill epithelium Colossoma macropomum may affect gills epithelial surface protection by reducing the formation of an unstirred layer and enhance the ion loss.

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Response of mucous cells of the gills of traíra (Hoplias malabaricus) and jeju (Hoplerythrinus unitaeniatus) (Teleostei: Erythrinidae) to hypo- and hyper-osmotic ion stress

Abstract: Response of mucous cells of the gills of traíra (Hoplias malabaricus)and jeju (Hoplerythrinus unitaeniatus) (Teleostei: Erythrinidae) to hypo-and hyper-osmotic ion stress

Cited by 29 publications

References 40 publications

Gill morphology and acute hypoxia: responses of mitochondria-rich, pavement, and mucous cells in the Amazonian oscar (Astronotus ocellatus) and the rainbow trout (Oncorhynchus mykiss), two species with very different approaches to the osmo-respiratory compromise

Gill morphology and acute hypoxia: responses of mitochondria-rich, pavement, and mucous cells in the Amazonian oscar (Astronotus ocellatus) and the rainbow trout (Oncorhynchus mykiss), two species with very different approaches to the osmo-respiratory compromise

Histology and Surface Ultra-Structure of the Gill of A Minor Carp, <i>Labeo bata</i> (Hamilton)

Identification of glycoproteins in mucous cells of the gill epithelium of Colossoma macropomum after exposure to organophosphate

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