Seasonal changes in radioiodine uptake and epithelial cell height of the thyroid gland in the freshwater teleosts Esomus danricus (Ham.) and Mystus vittatus (bloch) under varying conditions of illumination

1968 ◽  
Vol 87 (3) ◽  
pp. 422-428 ◽  
Author(s):  
T. P. Singh
Keyword(s):  
Thyroid Gland ◽  
Epithelial Cell ◽  
Seasonal Changes ◽  
Mystus Vittatus ◽  
Radioiodine Uptake ◽  
Cell Height ◽  
Freshwater Teleosts

THE RELATION BETWEEN THE STAINING PROPERTIES OF THE THYROIDAL COLLOID AND ITS IODINE CONTENT

1962 ◽  
Vol 40 (1) ◽  
pp. 227-236 ◽  
Author(s):  
A. DesMarais ◽  
Q. N. LaHam
Keyword(s):  
Amino Acids ◽  
Thyroid Gland ◽  
Epithelial Cell ◽  
Connective Tissue ◽  
Iodine Content ◽  
Staining Technique ◽  
Biologically Active ◽  
Aniline Blue ◽  
Cell Height ◽  
Orange G

A new staining technique has been developed for the thyroid gland involving the use of two components of the Mallory connective tissue stain, aniline blue and orange G in reversed proportions.Various indices such as incorporation of radioiodine, epithelial cell height, and number of blue and yellow staining follicles and total number of follicles have been used to test the validity of the color reaction in the colloid. The comparison of these diverse indices strongly suggests that the colloid material which stains with aniline blue corresponds to iodinated thyroglobulin, while the yellow staining material appears to be devoid of biologically active iodinated amino acids.

THE RELATION BETWEEN THE STAINING PROPERTIES OF THE THYROIDAL COLLOID AND ITS IODINE CONTENT

1962 ◽  
Vol 40 (2) ◽  
pp. 227-236 ◽  
Author(s):  
A. DesMarais ◽  
Q. N. LaHam
Keyword(s):  
Amino Acids ◽  
Thyroid Gland ◽  
Epithelial Cell ◽  
Connective Tissue ◽  
Iodine Content ◽  
Staining Technique ◽  
Biologically Active ◽  
Aniline Blue ◽  
Cell Height ◽  
Orange G

A new staining technique has been developed for the thyroid gland involving the use of two components of the Mallory connective tissue stain, aniline blue and orange G in reversed proportions.Various indices such as incorporation of radioiodine, epithelial cell height, and number of blue and yellow staining follicles and total number of follicles have been used to test the validity of the color reaction in the colloid. The comparison of these diverse indices strongly suggests that the colloid material which stains with aniline blue corresponds to iodinated thyroglobulin, while the yellow staining material appears to be devoid of biologically active iodinated amino acids.

Seasonal changes in the testes and ductus epididymis of the lizard Agama stellio stellio

1982 ◽  
Vol 3 (2) ◽  
pp. 221-229 ◽  
Author(s):  
M.E. Kattoulas ◽  
N.S. Loumbourdis
Keyword(s):  
Epithelial Cell ◽  
Seasonal Changes ◽  
Maximum Level ◽  
Maximum Size ◽  
Maximum Diameter ◽  
Testis Weight ◽  
Weight Changes ◽  
Adult Testis ◽  
Cell Height ◽  
Tubule Diameter

AbstractIn this study, the breeding biology of the lizard Agama stellio stellio was investigated. Adult testis weight changes markedly during the year, reaching maximum size in spring and minimum in summer. Seminiferous tubule diameter has its maximum level in spring and minimum in summer. Spermatogenesis is initiated in mid August and terminated in early July. Spermiogenesis is generally restricted to the period following hibernation. In July and August there is a complete spermatogenetic stasis. Epididymal tubules have their maximum diameter and epithelial cell height in spring. They are secretory during this season.

Colloid content and cell height as related to the secretory activity of the thyroid gland II. The activated thyroid of Triturus torosus

1945 ◽  
Vol 76 (2) ◽  
pp. 45-85 ◽  
Author(s):  
Eduard Uhlenhuth ◽  
Joseph E. Schenthal ◽  
James U. Thompson ◽  
Rhea Lyon Zwilling
Keyword(s):  
Thyroid Gland ◽  
Secretory Activity ◽  
Cell Height

scholarly journals An unusual case of struma ovarii

2021 ◽  
Vol 2021 ◽  
Author(s):  
Viktoria F Koehler ◽  
Patrick Keller ◽  
Elisa Waldmann ◽  
Nathalie Schwenk ◽  
Carolin Kitzberger ◽  
...  
Keyword(s):  
Thyroid Gland ◽  
Thyroid Hormones ◽  
Thyroid Function ◽  
Adnexal Mass ◽  
Thyroid Tissue ◽  
Reference Interval ◽  
Struma Ovarii ◽  
Radioiodine Uptake ◽  
Diagnostic Pitfalls ◽  
Biochemical Features

Introduction Struma ovarii is a teratoma of the ovaries predominantly composed of thyroid tissue. Hyperthyroidism associated with struma ovarii is rare, occurring in approximately 8% of cases. Due to the rarity of struma ovarii, available data are limited to case reports and small case series. Methods and results We report on a 61-year-old female patient with known Hashimoto’s thyroiditis on levothyroxine replacement therapy for years with transition to clinical and biochemical hyperthyroidism despite antithyroid medication with carbimazole (10 mg/day), new diagnosis of urothelial carcinoma and an adnexal mass suspicious of ovarian cancer. The patient underwent resection of the adnexal mass and histopathology revealed a mature teratoma predominantly composed of thyroid tissue showing high levels of sodium iodide symporter protein expression. Following struma ovarii resection and disappearance of autonomous production of thyroid hormones, the patient developed hypothyroidism with severely decreased thyroid hormone levels fT4 and fT3 (fT4 0.4 ng/dL, reference interval 0.9–1.7 and fT3 < 1.0 pg/mL, reference interval 2.0–4.4). This has previously been masked by continued thyroid-stimulating hormone suppression due to long-term hyperthyroidism pre-surgery indicating secondary hypothyroidism, in addition to primary hypothyroidism based on the known co-existing chronic lymphocytic thyroiditis of the orthotopic thyroid gland. Levothyroxine administration was started immediately restoring euthyroidism. Conclusion This case illustrates possible diagnostic pitfalls in a patient with two concurrent causes of abnormal thyroid function. Learning points Struma ovarii is an ovarian tumor containing either entirely or predominantly thyroid tissue and accounts for approximately 5% of all ovarian teratomas. In rare cases, both benign and malignant struma ovarii can secrete thyroid hormones, causing clinical and biochemical features of hyperthyroidism. Biochemical features of patients with struma ovarii and hyperthyroidism are similar to those of patients with primary hyperthyroidism. In such cases, thyroid scintigraphy should reveal low or absent radioiodine uptake in the thyroid gland, but the presence of radioiodine uptake in the pelvis in a whole body radioiodine scintigraphy. We give advice on possible diagnostic pitfalls in a case with two simultaneous causes of abnormal thyroid function due to the co-existence of struma ovarii.

SUBACUTE THYROIDITIS

1976 ◽  
Vol 81 (3) ◽  
pp. 707-715 ◽  
Author(s):  
E. G. Lebacq ◽  
G. Therasse ◽  
A. Schmitz ◽  
A. Delannoy ◽  
C. Destailleurs
Keyword(s):  
Thyroid Gland ◽  
Clinical Course ◽  
Subacute Thyroiditis ◽  
Histopathological Study ◽  
Radioiodine Uptake ◽  
Complete Destruction ◽  
Trh Stimulation ◽  
Before And After ◽  
Classical Pattern ◽  
Tsh Levels

ABSTRACT Eleven cases are reported of subacute thyroiditis with histopathological study; there were 9 females and 2 males. Bacteriological studies were inconclusive. Different stages of pathological involvement were observed at the same time in all patients. The clinical course followed the classical pattern in most cases: hyperthyroid-like, hypothyroid-like phase and recovery. Blood TSH assessment before and after TRH stimulation revealed an early phase of depression unresponsive to TRH, followed by high levels with marked stimulation; during the first phase, radioiodine uptake was low, but was enhanced by exogenous TSH administration; accordingly the low uptake seems to be due to low TSH levels and not to complete destruction of the thyroid gland. Failure of TSH levels to rise after TRH stimulation is typical of this stage of the disease. Although the final outcome is not yet predictable in some patients, definitive myxoedema appears to be probable in two cases.

Histometrical Changes in the Thyroid Gland of Chabro Chicken Reared during Summer and Winter Seasons

2020 ◽  
Author(s):  
Amit Singh Vishen ◽  
Varsha Gupta ◽  
S.P. Singh ◽  
Abhinov Verma ◽  
Rakesh Kumar Gupta ◽  
...  
Keyword(s):  
Thyroid Gland ◽  
Seasonal Changes ◽  
Squamous Epithelium ◽  
Poultry Farm ◽  
Follicular Cells ◽  
Climatic Variations ◽  
Reticular Fibers ◽  
Poultry Birds ◽  
The Tropics ◽  
Apparently Healthy

Background: Chabro is a strain of poultry birds especially designed for backyard farming and is more adoptive to climatic variations in the tropics. The thyroid gland plays an important role in controlling basal metabolic rate. The histoarchitectural changes of the gland in association with seasonal changes has not been studied so far in Chabro. The present study describes the season related variations in the histometry of thyroid gland.Methods: Micrometrical studies were conducted on thyroid gland of eight to ten weeks old 24 apparently healthy Chabro chickens procured from Poultry Farm, DUVASU, Mathura after approval of CPCSEA. For this study the chickens were divided into two groups consist of 12 chickens in each group reared in summer and winter seasons.Result: Histologically, the thyroid gland was composed of stroma and parenchyma. The capsule had outer thick adipose and inner thin fibrous layers. The follicles were filled with colloid produced by the follicular cells. The percentage of small follicles was more followed by medium and large follicles. The follicles were lined by simple squamous epithelium in summer and cuboidal epithelial cells in winter. All micrometrical parameters, amount of reticular fibers, percentage of large and active follicles were higher in winter.

scholarly journals SEASONAL CHANGES IN THE THYROID GLAND IN THE MALE COBRA,NAJA NAJAL

1969 ◽  
Vol 136 (3) ◽  
pp. 347-354 ◽  
Author(s):  
K. W. CHIU ◽  
J. G. PHILLIPS ◽  
P. F. A. MADERSON
Keyword(s):  
Thyroid Gland ◽  
Seasonal Changes

DEHYDROEPIANDROSTERONE-INDUCED THYROTROPHIN RELEASE DURING HEAT STRESS IN RATS

1975 ◽  
Vol 67 (1) ◽  
pp. 99-103 ◽  
Author(s):  
E. TAL ◽  
F. G. SULMAN
Keyword(s):  
Body Weight ◽  
Heat Stress ◽  
Epithelial Cell ◽  
Connective Tissue ◽  
Metabolic Rate ◽  
Albino Rats ◽  
Ambient Temperatures ◽  
Cell Height ◽  
Thyroid Epithelial Cell ◽  
Serum Tsh

SUMMARY Six groups each of 12 male albino rats were reared from day 21 of life at temperatures of 23, 34 or 37 °C. While the rats survived for unlimited periods at 23 and 34 °C, the animals reared at 37 °C succumbed within 5 days to heat stress. The latter group, when injected s.c. or i.p. with 50 mg dehydroepiandrosterone (DHA)/kg/day were no longer affected by the heat. During this treatment thyroid epithelial cell height doubled, colloid decreased by 20%, connective tissue did not change, the basic metabolic rate decreased by 10% and rectal temperatures of the treated rats increased with the ambient temperatures. Body weight increased only slightly, pituitary TSH decreased by 25%, serum TSH increased by over 50%, thyroxine and 125I uptake increased by 200%. The survival of the DHA-treated rats was apparently secured by blocking the hypothalamic thermoreceptors.

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