Histological and histochemical study of epithelial lining of the respiratory tract in adult goats

Kahwa, C.K.B; Purton, Mary

doi:10.1016/0921-4488(95)00799-7

Cited by 12 publications

(17 citation statements)

References 26 publications

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“…In the bronchial tree, the goblet cells produced mucosubstances and glands exhibited both acidic and mixed mucosubstances, and the present observation was in agreement with observations made in other mammalian species, including the sheep (Mariassay et al., 1988), goat (Kahwa and Purton, 1996) and Rhesus monkey (Plopper et al., 1984). The histochemistry of mucosubstances in the tracheobronchial tree of the neonatal yak was similar to that observed in sheep (Mariassay et al., 1988), pig (Jones et al., 1975) and one‐humped camel (Raji and Naserpour, 2007), wherein neutral mucosubstances were seen to predominate.…”

Section: Discussionsupporting

confidence: 93%

“…Yak goblet cells possessed uncoalescing secretory granules that appeared electron dense with a lucent core, which notably differed from the granules of other species such as sheep (Mariassy and Plopper, 1984) and Rhesus Monkeys (Plopper et al., 1989) and Rodents (Jeffery and Reid, 1975; Kennedy et al., 1978; Pack et al., 1980), wherein the goblet cells had electron‐lucent secretory granules often with dense cores, or/and the membrane incomplete and allowing fusion. The histology of the bronchioles to terminal bronchioles in the yak appeared to be similar to that seen in most mammalian species, including the pig (Baskerville, 1970) and goat (Kahwa and Purton, 1996). This study showed that the respiratory bronchioles were prominent and well developed in the yak.…”

Section: Discussionsupporting

confidence: 53%

“…The histochemistry of mucosubstances in the tracheobronchial tree of the neonatal yak was similar to that observed in sheep (Mariassay et al., 1988), pig (Jones et al., 1975) and one‐humped camel (Raji and Naserpour, 2007), wherein neutral mucosubstances were seen to predominate. But in adult Rhesus monkey (Plopper et al., 1989) and goat (Kahwa and Purton, 1996), the acidic mucosubstances were present in the vast majority of surface goblet cells in trachea and proximal bronchi. However, at the EM level, most mucus‐producing cells contained a mixture of both serous (electron dense) and mucous (electron lucent) secretory vesicles.…”

Section: Discussionmentioning

confidence: 99%

“…A number of descriptions exist for the common laboratory species, including the rodents (Pack et al., 1981; Christensen et al., 1987; Ohtsuka et al., 1997) and non‐human primates (Maina, 1988; Plopper et al., 1989). Among the large species, the dog (Takenaka et al., 1998), pig (Winkler and Cheville, 1984, 1985), sheep (Mariassy and Plopper, 1984; Lakritz et al., 1992), goat (Kahwa and Purton, 1996; Kahwa et al., 1997), horse (Nowell and Tyler, 1971), camel (Raji and Naserpour, 2007) and cattle (Mariassy et al., 1975; Singh and Mariappa, 1981) have received attention.…”

Section: Introductionmentioning

confidence: 99%

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Morphological Analysis of the Lung of Neonatal Yak

Yang

Cui

et al. 2010

Anat Histol Embryol

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Although yaks play an important role as companion or pack and draught animals on Chinese plateaus in alpine and sub-alpine regions, morphological studies and anatomical data on the lung of yak are sparse. To provide anatomical descriptions and morphometric data, 10 one-day-old yaks were examined by means of dissection, light and electron microscopy. The measurements of lung were made on dissected specimens and histological sections. Unequal dichotomous branching was demonstrated in the dissected tracheobronchial tree. The diameters of bronchial airways and height of epithelium were measured, and showed that the variation of diameters in airways was always greater than that of height of epithelium. In addition, the thickness of muscularis, cartilage and adventitia was examined, as well as the number of goblet and Clara cells in airways. Ultrastructural studies showed that the surface epithelium was mainly composed of goblet, ciliated, Clara and basal cells, similar to that in other domestic animals. Under electron microscope, two distinctive types of ciliated cells could be seen in the tracheobronchial epithelium. The first type contained some mitochondria, distended smooth endoplasmic reticulum (SER), little rough endoplasmic reticulum (RER) and numerous vacuoles in electron-lucent cytoplasm. The second type had dense cytoplasm with abundant mitochondria, RER and no vacuoles. Both types were rich of glycogen granules. The goblet cells in neonatal yak lung had the following characteristic features: dentate nucleus in dense cytoplasm, with stacks of RER and numerous dense membrane-bounded mucous droplets, which were round or oval, often with an electron-lucent core. The droplets were not confluent. Glycogen granules were numerous, and Golgi complex was occasionally present. Clara cells were dome-shaped and usually protruded into the airway lumen. Large amounts of SER and many secretory droplets were found within the cytoplasm. Several typical 'clefts' were also found in the cytoplasm.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionsupporting

confidence: 53%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Morphological Analysis of the Lung of Neonatal Yak

Yang

Cui

et al. 2010

Anat Histol Embryol

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“…The mucosal surface of both trachea and bronchi of examined specimens was completely covered by cilia (Fig. 4) similar to that present in cattle (Kahwa & Purton, 1996;Iovannitti et al, 1985), and neonatal kids (Kahwa et al, 2000). Moreover, in newborn puppies the dorsal wall only is ciliated while the lateral and ventral wall only has patches of cilia in camel (Raji & Naserpour, 2007;Wright et al, 1983).…”

Section: Resultsmentioning

confidence: 65%

Histology and Scanning Electron Microscopy of the Lower Respiratory Tract in the Adult Red Fox (Vulpes vulpes)

Moussa

Hassan

2015

Int. J. Morphol.

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SUMMARY:The study was conducted on a total of three adult healthy freshly killed red foxes of both sexes weighing about 4-6 kg collected from Abou Rawwash, Giza, Egypt. The wall of trachea and bronchi formed of mucosa, submucosa and adventitia. The mucosa formed of pseudostratified columnar epithelium and lamina propria. The respiratory epithelium composed of tall columnar ciliated, goblet cells, basal cells, and neuroendocrine cells. Goblet cells account for about 20 to 30% of cells in the more proximal. Basal cells are relatively small triangular cells whose bases are attached to the basement membrane. The primary bronchiole is lined by simple columnar nonciliated to cuboidal epithelium containing some bronchiolar exocrine cells and some goblet cells. Neuroendocrine cells constitute about 4 to 5% of bronchial epithelial cells, attached at their bases to the basement membrane and have tapering apices. The lamina propria consists principally of a network of capillaries, a meshwork of connective tissue fibers continuous with the basement membrane. The submucosa formed of connective tissue elements and blood vessels and devoid of Tracheobronchial glands in red fox. The adventitia contain tracheal cartilage and muscle in trachea and bronchial cartilages and muscles in bronchi. Tracheal muscle is transverse bundles attached to the outer perichondrium. In the bronchi, muscle is organized in transverse bundles close to the epithelium adjacent to the lamina propria and longitudinal bundles close to the cartilages. Alveoli are demarcated by septa composed of a continuous layer of epithelial cells overlying a thin interstitium. The epithelial cells consist principally of type I and type II pneumocytes. SEM revealed that, the mucosal surface of both trachea and bronchi was completely covered by cilia. There were few glandular openings or goblet cell.

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Histochemical and Ultrastructural Observations of Respiratory Epithelium and Gland in Yak (Bos grunniens)

Yang

Cui

et al. 2010

The Anatomical Record

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Submucous glands and epithelial mucous cells of yak (Bos grunniens) respiratory tract have been studied by a variety of histochemical methods and transmission electron microscopy for differentiating and characterizing serous and mucous cells. By light microscopy, the distribution, numbers of mucous cells, volume of mucous glands (Reid index), and the ratio of mucous cell to serous cell in the bronchial tree were measured with different staining. Histochemically, a majority of mucous cells, presented in the surface epithelium of bronchi and glands, secreted neutral and acid mucosubstances, only a few sulfated mucosubstances were present. No mucus-producing cells were observed from the terminal to respiratory bronchiolar level. Ultrastructurally, serous cells in glands of the lamina propria had two distinct forms: one type filled with many round dense secretory granules, plentiful RER and few other organelles, similar to other animals; the other type contained some oval mitochondrial and distended RER, the granules resembled the former. The mucous cells in gland were similar to that of epithelium, which containing abundant secretory granules with an eccentric core. The mucous cells of the surface epithelium differ from other animals in the structure and histochemistry of their secretory granules. Analysis of the size and distribution of the secretory granules and other organelles of serous cells suggested that differences represent different phases of a secretory cycle, not various populations of cell or granules. Anat Rec, 293:1259Rec, 293: -1269

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Histological and histochemical study of epithelial lining of the respiratory tract in adult goats

Cited by 12 publications

References 26 publications

Morphological Analysis of the Lung of Neonatal Yak

Morphological Analysis of the Lung of Neonatal Yak

Histology and Scanning Electron Microscopy of the Lower Respiratory Tract in the Adult Red Fox (Vulpes vulpes)

Histochemical and Ultrastructural Observations of Respiratory Epithelium and Gland in Yak (Bos grunniens)

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