Atypical thyroid follicles arising from an ultimobranchial-like cyst in a postnatal canine thyroid gland

Booth, Kenneth Kurt; Ghoshal, N. G.

doi:10.1159/000145665

Cited by 4 publications

(3 citation statements)

References 10 publications

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“…UBB as well as thyroid follicles in senile rabbits underwent cystic degeneration and numerous cell debris as well as many macrophage cells were recorded in their lumina. Similar degenerative changes were also demonstrated in the UBB of many other animals as rats (Conde et al, 1992), dogs (Booth and Gloshal, 1978) and buffaloes (Elwan, 1994).…”

Section: Discussionsupporting

confidence: 55%

Development of the thyroid gland of New-Zealand white rabbit

Soliman

Nabil

El-Kerdawy

et al. 2005

Journal of Veterinary Medical Research

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The development of thyroid glands of New-Zeland rabbits was studied in 28 fetuses (10-30 days) and 28 rabbits (3 days-5 years). The thyroid premordia appeared at the 12 th day of gestation as 2 masses of cords and clumps of cells. The gland assumed the bilobed form with a narrow isthmus in between at the 18 th day. Small primitive follicles with narrow empty lumina appeared in 14-day-old fetuses. True follicles were recorded in 20-22 days old fetuses while colloid was seen in the lumina of the central follicles at the 24 th day. Light (C-or Parafollicular) cells were seen for the first time at the 12 th day. With development of the follicles, C-cells appeared between the follicular cells and some of them come in contact with colloid. The ultimobranchial body (UBB) was observed in 20 days old fetuses close to the thyroid anlage and entered into its tissue at the 22 nd day. Later on, it gave thyroid-like follicles or ultimobranchial cysts. With the electron microscope (EM) follicular cells of earlydeveloping fetuses were not yet differentiated. They contained few ill-developed rough endoplasmic reticulum (rER) and mitochondria. The organelles became well developed and the cells started to secrete colloid in full term fetuses. The maximum rate of secretory activity was achieved in the glands of adult rabbits. Changes in the thyroid glands during the postnatal life up to 5 years of age (age of senility) were followed up and described.

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Section: Discussionsupporting

confidence: 55%

Development of the thyroid gland of New-Zealand white rabbit

Soliman

Nabil

El-Kerdawy

et al. 2005

Journal of Veterinary Medical Research

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“…Cordier et al [1976] believed that these cysts in dwarf mice are the endodermal remnants of the UBB after the migration of parafollicular cells. However, the final fate of ultimobranchial cells is yet to be deter mined in mammals [Booth and Ghoshal, 1978],…”

Section: Unusual Folliclesmentioning

confidence: 99%

“…These cysts, which in the pres ent paper will be called 'unusual follicles', have been given various names by several investigators [Watzka, 1933;Axelrad and Leblond, 1955;Sehe, 1966;Calvert and Isler, 1970;Neve and Woilman, 1971;Woilman and Neve, 1971;Calvert, 1972;Das, 1976, 1978;Booth and Ghoshal, 1978]. In the house shrew (Suncus murinus), it is interesting to note that these cysts are invariably restricted to the internal parathyroid .…”

Section: Introductionmentioning

confidence: 99%

Thyroid Calcitonin Cells and Unusual Follicles in the Fox

Srivastav¹,

Swarup²

1982

Cells Tissues Organs

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The thyro-parathyroid complex of foxes was cut into serial sections. For demonstration of calcitonin (C) cells the sections were stained by hematoxylin and eosin, PAS-hematoxylin, Davenport’s silver impregnation and lead hematoxylin. The C cells are oval and rounded in shape and unevenly distributed. The isthmus and the parathyroid glands are completely devoid of C cells. Certain unusual follicles are seen in the thyroid of the fox.

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The origin of pituitary cysts in the rostral pars distalis of the nine-spined stickleback, Pungitius pungitius L.

Benjamin

1981

Cell Tissue Res.

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Pituitary cysts in the nine-spined stickleback, Pungitius pungitius L., developed next to blood vessels passing through the prolactin zone of the rostral pars distalis to the connective tissue capsule at its periphery. Cysts were most frequent when pituitaries were large compared with body lengths. However, the incidence of cysts could not be closely related to body length alone. As the rostral pars distalis is more highly vascularised in fish with large pituitaries, and as there was no evidence of accumulating secretion around these blood vessels, it is suggested that cysts develop when vascular demands (or supplies) become excessive. Associated with the greater vascularity of the rostral pars distalis in large pituitaries was a remarkable development of non-granulated cells. Indeed cysts may originate as enlarged intercellular spaces between such cells, as the latter often surround blood vessels. The non-granulated cells are also important in enlarging cyst cavities (by phagocytosing prolactin-cell debris) and perhaps for maintaining their structural integrity. It is suggested that the macrophages within cyst cavities are derived from the non-granulated cells.

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Atypical thyroid follicles arising from an ultimobranchial-like cyst in a postnatal canine thyroid gland

Cited by 4 publications

References 10 publications

Development of the thyroid gland of New-Zealand white rabbit

Development of the thyroid gland of New-Zealand white rabbit

Thyroid Calcitonin Cells and Unusual Follicles in the Fox

The origin of pituitary cysts in the rostral pars distalis of the nine-spined stickleback, Pungitius pungitius L.

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