Thyroid tissue and some of its properties in the hagfish, Myxine glutinosa

Waterman, A. J.; Gorbman, Aubrey

doi:10.1016/0016-6480(63)90046-7

Cited by 18 publications

(8 citation statements)

References 5 publications

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“…In addition, we show here that the inclusions have the structural characteristics of the primary and secondary lysosomes involved in hydrolysis of thyroglobulin and the subsequent release of the thyroid hormones (see Bloom and Fawcett, ). This is consistent with the uptake of radioactive iodine in the cysts of M. glutinosa (Waterman and Gorbman, ). However, the irregularly stainable material observed in the cyst lumen is not like the colloid observed in other vertebrates (also, see Waterman and Gorbman, ).…”

Section: Discussionsupporting

confidence: 89%

“…This is consistent with the uptake of radioactive iodine in the cysts of M. glutinosa (Waterman and Gorbman, ). However, the irregularly stainable material observed in the cyst lumen is not like the colloid observed in other vertebrates (also, see Waterman and Gorbman, ). The present results could not discern on whether the precursors of the thyroid hormones are stored in the cyst lumen or directly in the large cytoplasmic inclusions (see Henderson and Gorbman, ).…”

Section: Discussionsupporting

confidence: 89%

“…Finally, the presence of cystic structures in the adipose tissue associated with the pericardium in E. cirrhatus is worth of note. The cysts resemble the thyroid follicles described in both M. glutinosa (Waterman and Gorbman, ) and E. stoutii (Henderson and Gorbman, ). However, the follicular cells in E. cirrhatus show a higher density of cytoplasmic inclusions.…”

Section: Discussionsupporting

confidence: 64%

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Morphological analysis of the hagfish heart. II. The venous pole and the pericardium

Icardo

Colvée

Schorno

et al. 2016

Journal of Morphology

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The morphological characteristics of the venous pole and pericardium of the heart were examined in three hagfish species, Myxine glutinosa, Eptatretus stoutii, and Eptatretus cirrhatus. In these species, the atrioventricular (AV) canal is long, funnel-shaped and contains small amounts of myocardium. The AV valve is formed by two pocket-like leaflets that lack a papillary system. The atrial wall is formed by interconnected muscle trabeculae and a well-defined collagenous system. The sinus venosus (SV) shows a collagenous wall and is connected to the left side of the atrium. An abrupt collagen-muscle boundary marks the SV-atrium transition. It is hypothesized that the SV is not homologous to that of other vertebrates which could have important implications for understanding heart evolution. In M. glutinosa and E. stoutii, the pericardium is a closed bag that hangs from the tissues dorsal to the heart and encloses both the heart and the ventral aorta. In contrast, the pericardium is continuous with the loose periaortic tissue in E. cirrhatus. In all three species, the pericardium ends at the level of the SV excluding most of the atrium from the pericardial cavity. In M. glutinosa and E. stoutii, connective bridges extend between the base of the aorta and the ventricular wall. In E. cirrhatus, the connections between the periaortic tissue and the ventricle may carry blood vessels that reach the ventricular base. A further difference specific to E. cirrhatus is that the adipose tissue associated with the pericardium contains thyroid follicles. J. Morphol. 277:853-865, 2016. © 2016 Wiley Periodicals, Inc.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionsupporting

confidence: 89%

Section: Discussionsupporting

confidence: 64%

See 1 more Smart Citation

Morphological analysis of the hagfish heart. II. The venous pole and the pericardium

Icardo

Colvée

Schorno

et al. 2016

Journal of Morphology

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“…The Golgi apparatus is also relatively small and its individual sacs are also flattened. These facts which mean the low activity of the hagfish thyroid coincide with the physiological data shown by TONG et al (1961) and WATERMAN and GORBMAN (1963) that the uptake of 131I is small in amount and the rate of secretion of thyroxine is very slow. Similar results have been published for the thyroid cell of the adult lamprey and the endostylar type 3 cell of the larval lamprey (EGEBERG, 1965;FUJITA and Fig.…”

Section: Discussionsupporting

confidence: 48%

Electron Microscopic Studies on the Thyroid Gland of the Hagfish, <i>Eptatretus burgeri</i>. (A Part of Phylogenetic Studies of the Thyroid Gland)

Fujita

Shinkawa

1975

Arch. Histol. Jap., Arch. Histol. Jpn

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“…Presumably, these inclusions correspond to dense granules, which have been demonstrated in light and transmission electron microscopic studies (Waterman and Gorbman 1963, Gabe 1971, Henderson and Gorbman 1971, Fujita and Shinkawa 1975. Presumably, these inclusions correspond to dense granules, which have been demonstrated in light and transmission electron microscopic studies (Waterman and Gorbman 1963, Gabe 1971, Henderson and Gorbman 1971, Fujita and Shinkawa 1975.…”

Section: Discussionmentioning

confidence: 82%

A Scanning Electron Microscopic Study on the Thyroid Follicle of the Hagfish Eptatretus burgeri

Suzuki

Kawabata

1988

Acta Zoologica

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Suzuki, S. and Kawabata, I. 1988. a scanning electron microscopic study on the thyroid follicle of the hagfish Eptatretus burgeri. Japan.)-Acta zool. (Stockh.) 69, 253-258.The external form of the follicles was mostly spherical or oval and the large oval follicles reached more than 300 X 180 pm in size. Cytoplasmic inclusions of various sizes were observed in the follicular epithelium. Follicles were composed of hexagonal epithelial cells, and on the apical surface of the cells many microvilli were found (380-500 microvilli per cell) with globular or amorphic cytoplasmic protrusions. In a few cells a central cilium was also observed. From these results a relationship between thyroid structure and function in the hagfish is discussed.

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Thyroid tissue and some of its properties in the hagfish, Myxine glutinosa

Cited by 18 publications

References 5 publications

Morphological analysis of the hagfish heart. II. The venous pole and the pericardium

Morphological analysis of the hagfish heart. II. The venous pole and the pericardium

Electron Microscopic Studies on the Thyroid Gland of the Hagfish, <i>Eptatretus burgeri</i>. (A Part of Phylogenetic Studies of the Thyroid Gland)

A Scanning Electron Microscopic Study on the Thyroid Follicle of the Hagfish Eptatretus burgeri

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