Multiple aspects of cornea development, including the innervation of the cornea by trigeminal axons, are sensitive to embryonic levels of thyroid hormone (TH). Although previous work showed that increased TH levels could enhance the rate of axonal extension within the cornea in a thyroxine (T4)-...
T3 and T4 at 0.1 and 1.0 ppm had no significant effects on growth or feed efficiency in pullets, but the 10.0-ppm level of T3 and T4 caused a reduction of -55.24 and -28.18%, respectively, in body weight gain as compared with control birds. T3 was more active than T4 in reducing ...
Before and immediately after and one hour after exercising blood sampling were taken and was measured the concentration of thyroid stimulating hormone (TSH), thyroxin (T4), and triiodothyronine (T3). To examine changes variance ANOVA test were used and only in T4 hormone, significant difference ...
Of the two hormones (T3 and T4), triiodothyronine is regarded as being the strongest owing to the fact that it is the “usable” hormone. Whereas thyroxine can actively impact the amount of triiodothyronine released, it cannot actually take any form of action in regards to metabolic output its...
SUMMARYPatients with thyrotoxic Graves' disease were treated daily for 10 d with 1 g sodium ipodate, an iodine rich X-ray contrast agent which impairs outer ring (5′-) deiodination of T4 to T3, or with 12 drops of a saturated solution of potassium iodide (SSKI). T4, T3 and reverse ...
Water consumption, thyroid hormone function, behavioral responses, and skull and jawbone measurements were compared among treatments. Additionally, liver, spleen, genital, and brain imidacloprid concentrations were determined by an enzyme-linked immunosorbent assay (ELISA). Results indicated that 1) control...
DOI2 allows the pituitary and hypothalamus to monitor both plasma T3 and T4 independently and plays therefore a critical role in the feedback regulation of thyroid hormone secretion (Larsen, 1982). DIO3 catabolize thyroid hormones and terminates T3 action and is also influenced by thyroid state (...
Serum T3,T4,FT3,HR and BP were measured respectively in the preoperation,perioperation and postoperation in all patients. Results Before the operation,serum levels of T3,T4 and FT3 in two groups were no obviously different,but serum thyroxine levels were decreased post-operation. All patients ...
1. The effects of 4 weeks of thyroid hormone treatment on contractile, enzyme-histochemical and morphometric properties and on the myosin isoform composition were compared in the slow-twitch soleus and the fast-twitch extensor digitorum longus (EDL) muscle in young (3-6 months) and old (20-24...
Describe the hormone that has a direct effect on gluconeogenesis. Explain the difference between the T3 hormone and the T4 hormone. Identify the hormone from the given function: Stimulates the secretion of thyroid hormones. What is the effect of the carrier on hormone action? Propylthiouracil preven...