Structural and ultrastructural differentiation of the thyroid gland during embryogenesis in the grass snake Natrix natrix L. (Lepidosauria, Serpentes)

Rupik, Weronika

doi:10.1016/j.zool.2011.05.002

Cited by 21 publications

(22 citation statements)

References 123 publications

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“…It appeared to increase in number with age. This element has been reported in the follicular cell of many kinds of animal, including camel (Fujita, 1975;Atoji et al, 1999) and snake embryos (Rupik, 2011). Several studies of the ultrastructure of the thyroid glands of many species including human, dog, bat, salamander and Xenopus levis have noted the presence of an occasional cilium extending from apical border into the thyroid follicular lumen (Klinck et al, 1970;Setoguti, 1973).…”

Section: Histologymentioning

confidence: 94%

Histologic and ultrastructural observations on the thyroid gland of the White Fulani (Zebu) cattle in Northern Nigeria

Igbokwe¹,

Ezeasor²

2015

Afr. J. Biotechnol.

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Section: Histologymentioning

confidence: 94%

Histologic and ultrastructural observations on the thyroid gland of the White Fulani (Zebu) cattle in Northern Nigeria

Igbokwe¹,

Ezeasor²

2015

Afr. J. Biotechnol.

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“…Available information on thyroid structure and development come mainly from invertebrates, murines (mouse, rat), reptiles, zebra fish and humans (Fujita, 1975;1988;Van Vliet & Polak, 2007;Rupik, 2011). Few published articles on thyroid morphology have considered domestic animals like goat (Roy et al, 1975(Roy et al, , 19761978a, 1978bBaishya et al, 1985Baishya et al, , 1986Osuagwuh & Aire, 1992;Adhikary et al, 2003;Bhardwaj et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Ultrastructure of the Thyroid Gland in Adult West African Dwarf Goat (Capra hircus)

2015

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. Ultrastructure of the thyroid gland in adult West African dwarf goat (Capra hircus). Int. J. Morphol., 33(2):532-537, 2015. SUMMARY:The present study examined ultrastructure of the thyroid gland of adult West African Dwarf (WAD) goat in order to further understand the ultrastructural morphology and some of the changes in the components of the thyroid gland in goat with age. Thyroids glands obtained from fifteen adult WAD goats of different ages and sexes slaughtered at the local abattoirs were used in this study. Electron microscopic techniques were used to study the fixed tissue with emphasis on the follicular and parafollicular cells. The results showed that the ultrastructure is generally similar to that of some domestic animals. Follicular cells were cuboidal in young adult goats thyroids but were flattened in older goat thyroids of 5-7 years. These cells remarkably showed highly dilated cisternae of rough endoplasmic reticulum which decreased in frequency the older goats. Microvilli were short and sparse on the follicular cells and the number decreased in the older goats. Different sizes of apical vesicles of varying electron density were encountered that included colloid droplets, secretory vesicles and lysosome-like bodies and the appearance of these vesicles changed with age. Parafollicular cells were encountered in the basal position between follicular cells in all thyroids examined. Numerous dense cytoplasmic granules were observed and they were not apparently different from that described in several mammals.

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“…This alteration is related to the number of cells, morphology and hormone storage in the cells (Kameda, 1984). A good number of published articles on thyroid structure and its development are mainly from work carried out in invertebrates, murines (mouse, rat), reptiles, zebra fish and humans (Fujita, 1975;Rupik, 2011). However some studies in pigs (Tomonari, 1959;Parker et al, 1980;Majdic et al, 1993) focused more on histology, morphometry, and hormonal profile in postnatal pigs with scant information on foetal and postnatal thyroid structure.…”

Section: Introductionmentioning

confidence: 99%

Histological and immunohistochemical changes of the thyroid gland during the foetal and postnatal period of development in indigenous Large White crossbred pigs

Igbokwe¹,

Ezeasor²

2015

BJVM

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The present study was carried out to ascertain the morphometric, histological and immunohistochemical changes (expression of calcitonin and somatostatin) in the thyroid gland of indigenous local pig crosses during the foetal and postnatal period of development. A total of thirty foetal thyroids (40) grouped into early and late foetal period, fifteeen (15) prepubertal and ten (10) pubertal thyroids obtained from slaughtered pigs in the local abattoir were used. Histomorphometrically, all the measured parameters increased with development in all thyroid age group. The mean values were significantly different at P˂0.05 among ages. Histologically, significant age-related variations in the structure of the foetal and postnatal thyroids were observed in the follicles, colloid, colloid vacuoles, follicular cells and interfollicular connective tissue. Calcitonin was demonstrated in the foetal and postnatal parafollicular cells, while somatostatin was only localised in the pubertal parafollicular cells. The study provides strong evidence of thyroid functionality during the late foetal period that changes with age during the development.

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Structural and ultrastructural differentiation of the thyroid gland during embryogenesis in the grass snake Natrix natrix L. (Lepidosauria, Serpentes)

Cited by 21 publications

References 123 publications

Histologic and ultrastructural observations on the thyroid gland of the White Fulani (Zebu) cattle in Northern Nigeria

Histologic and ultrastructural observations on the thyroid gland of the White Fulani (Zebu) cattle in Northern Nigeria

Ultrastructure of the Thyroid Gland in Adult West African Dwarf Goat (Capra hircus)

Histological and immunohistochemical changes of the thyroid gland during the foetal and postnatal period of development in indigenous Large White crossbred pigs

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