Fine structure of taste buds located on the lamb epiglottis

Sweazey, Robert D.; Edwards, Chris; Kapp, Beth M.

doi:10.1002/ar.1092380411

Cited by 15 publications

(10 citation statements)

References 52 publications

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“…Chemosensory cell clusters have been reported as laryngeal taste buds in various species (Travers & Nicklas, ; Sweazey et al. ; Shrestha et al. ; Nishijima & Atoji, ; Sbarbati et al.…”

Section: Discussionmentioning

confidence: 99%

“…An electron microscopic study of sheep laryngeal ‘taste buds’ showed that type III cells were absent (Sweazey et al. ). The present results are inconsistent with these findings but are supported by those from the rat larynx (Nishijima & Atoji, ).…”

Section: Discussionmentioning

confidence: 99%

“…Chemosensory cells are widely distributed from the nasal cavity to the trachea; solitary sensory cells in the nasal cavity and larynx as well as the trachea (for reviews, see Krasteva & Kummer, ; Tizzano & Finger, ), and taste bud‐like chemosensory cell clusters in the pharynx and larynx (Idé & Munger, ; Travers & Nicklas, ; Sweazey et al. ; Nishijima & Atoji, ; Sbarbati et al. ).…”

Section: Introductionmentioning

confidence: 99%

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Morphology of GNAT3‐immunoreactive chemosensory cells in the rat larynx

2018

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The upper airways play important roles in respiratory defensive reflexes. Although solitary chemosensory cells and chemosensory cell clusters have been reported in the laryngeal mucosa of mammalian species, the distribution and cellular morphology of chemosensory cells remain unclear. In the present study, the distribution and morphology of solitary chemosensory cells and chemosensory cell clusters were examined by immunofluorescence for GNAT3 on whole‐mount preparations of the rat laryngeal mucosa. Electrophysiological experiments were performed to analyze the respiratory reflexes evoked by bitter stimuli to the laryngeal cavity. In the whole area of the laryngeal mucosa, the numbers of GNAT3‐immunoreactive solitary chemosensory cells and chemosensory clusters were 421.0 ± 20.3 and 62.7 ± 6.9, respectively. GNAT3‐immunoreactive solitary chemosensory cells were mainly distributed in the mucosa overlying epiglottic and arytenoid cartilage, and chemosensory clusters were mainly distributed on the edge of the epiglottis and aryepiglottic fold. GNAT3‐immunoreactive solitary chemosensory cells were slender with elongated processes or had a flask‐like/columnar shape. The number of GNAT3‐immunoreactive cells in chemosensory clusters was 6.1 ± 0.4, ranging between 2 and 14 cells. GNAT3‐immunoreactive cells in the cluster were variform and the tips of apical processes gathered at one point at the surface of the epithelium. The tips of apical cytoplasmic processes in solitary chemosensory cells and cells in the cluster were immunoreactive for espin, and faced the laryngeal cavity. Physiological experiments showed that the application of 10 mm quinine hydrochloride to the laryngeal cavity decreased respiratory frequency. The present results revealed the chemosensory field of the larynx and the morphological characteristics of the laryngeal chemosensory system for respiratory depression.

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“…Chemosensory cell clusters have been reported as laryngeal taste buds in various species (Travers & Nicklas, ; Sweazey et al. ; Shrestha et al. ; Nishijima & Atoji, ; Sbarbati et al.…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Morphology of GNAT3‐immunoreactive chemosensory cells in the rat larynx

2018

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“…Taste buds of adult mammals such as the intensely investigated rabbit consist of four types of cells (Murray's nomenclature): Type I cells contain dark granules in their apical regions and are considered to provide the mucous material filling the taste pore (Farbman, 1965;Murray and Murray, 1971;Witt 1996). The function of spindle-shaped type I1 cells is unknown; they may play a role as supporting or even as receptor cells (Murray and Murray, 1971;Toyoshima and Tandler, 1987;Royer and Kinnamon, 1994;Sweazey et al, 1994). The less frequent type I11 cells are bulb-shaped and contain basally numerous dense-cored vesicles.…”

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confidence: 99%

Embryonic and early fetal development of human taste buds: A transmission electron microscopical study

Witt

Reutter

1996

Anat. Rec.

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“…Nevertheless, various similar corpuscle were found in the palate, vallecula, epiglottis, pharyngeal wall and also in the larynx (12,17,21,22,28,30) . When in the pharynx and larynx the admitted function are related with aspiration protection (29) . It was already said that no taste perception could be demonstrated on the hard palate except in the region close to the border between the hard and soft palate, where the threshold values were very high compared with those for the soft palate (22) .…”

Section: Introductionmentioning

confidence: 99%

Oral taste recognition in health volunteers

Costa

Santana

Almeida

2010

Arq. Gastroenterol.

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-Context -Taste food recognition has an important role in the nutritional conditions and also allows protection of the organism integrity against foods potentially dangerous. Objective -To investigate the presence of the selective taste regions on the tongue and also the palate participation in the oral taste definition. Methods -A standard tongue divided in six regions was exposed with the four basic tastes (sweet, salted, sour and bitter), 10 times each. Thirteen volunteers were studied from both side and 34 only from one side, performing 240 tests with opened mouth and 240 with closing mouth, just after tongue sapid stimulation. A second group, with 12 volunteers, had its taste recognition studied, with and without palate isolation, using silicone prosthesis (n = 120).Results -From results, chi-square (3×2) and (2×2), nonparametric independency test with P = 0.05 were obtained. ConclusionsAnterior, medium and posterior regions of the tongue, at both sides, had the same taste discriminative capacity. Nevertheless, closed mouth increased immediate and late recognition capacity by palate participation. It was possible to admit that palate participation increase the sapid perception in the mouth, by recruitment of the palate taste receptors and also by fluid compression and its scattering over tongue surface.

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Fine structure of taste buds located on the lamb epiglottis

Cited by 15 publications

References 52 publications

Morphology of GNAT3‐immunoreactive chemosensory cells in the rat larynx

Morphology of GNAT3‐immunoreactive chemosensory cells in the rat larynx

Embryonic and early fetal development of human taste buds: A transmission electron microscopical study

Oral taste recognition in health volunteers

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