...Elias Taylor; Jonathan D. Allen; Andreas Heyland The timing of metamorphosis and settlement is critical for the survival and reproductive success of marine animals with biphasic life cycles. Thyroid hormones (THs) regulate developmental timing in diverse groups of chordates, including...

...Jason C. Raine; Allison B. Coffin; Craig W. Hawryshyn SUMMARY Thyroid hormones (THs) play a vital role in vertebrate neural development, and, together with the beta isoform of the thyroid hormone receptor (TRβ), the development and differentiation of cone photoreceptors in the vertebrate retina...

... by inhibition of acetyl CoA carboxylase (ACC) after hatching, when ACC protein concentration increases significantly, and by a significant AMPK-induced increase in PGC-1α mRNA concentration (at +1 day), but not in NRF-1 mRNA concentration. AMPK phosphorylation is under the control of thyroid hormone, and AMPK...

... contribution to cold-induced BAT oxidative damage, but contributes to the liver response only as a T 3 precursor. * Author for correspondence ( [email protected] ) 4 5 2010 © 2010. 2010 cold exposure thyroid hormone oxidative stress ROS production antioxidant capacity mitochondria...

...J. C. Raine; A. B. Coffin; C. W. Hawryshyn SUMMARY Rainbow trout possess ultraviolet-sensitive (UVS) cones in their retina that degenerate naturally during development. This phenomenon can be induced with exogenous thyroxine [T4, a thyroid hormone (TH)] treatment. However, the previous T4 exposure...

... population remains in the dorsal retina. How this spatial distribution of UVS cones is maintained is unclear. Thyroxine(T4) induces UVS cone loss, and local thyroid hormone regulation was hypothesized to control UVS cone distribution. Thyroid hormone receptor alpha(TRα), thyroid hormone receptor beta (TRβ...

... metabolic state in developing chicken embryos occurs by the interaction between increased basal ATP demand(Na + /K + -ATPase activity and gene expression), increased oxidative capacity and increased uncoupling of mitochondria; this process is controlled by thyroid hormone via its effect on PGC1α and adenine...

... restored euthyroid values of heart rate and indices of tissue oxidative damage, indicating that GC-1 is able to lower cholesterolemia, bypassing detrimental effects of T 3 . * Author for correspondence (e-mail: [email protected] ) 6 1 2009 2009 thyroid hormone thyroid hormone...

...Jen-Chieh Shiao; Su-Mei Wu; Yi-Ping Hwang; Done-Ping Wu; Pung-Pung Hwang SUMMARY Thyroid-mediated otolith growth in tilapia was evaluated by the ontogenic triiodothyronine (T 3 ) profile revealed by radioimmunoassay during the first month after hatching. Thyroid hormone receptor genes( TR α and TR...

... UV cone blue cone double cone opsin cone mosaic retinal development in situ hybridization microspectrophotometry thyroid hormone fish References Ahlbert, I.-B. ( 1976 ). Organization of the cone cells in the retinas of salmon ( Salmo salar ) and trout ( Salmo trutta trutta...

... development. Elevated temperature further inhibited pelvic fin development in all treatments. Pupfish in the low growth group also showed reduced levels of thyroid hormone, suggesting a possible physiological mechanism underlying these morphological changes. To test this mechanism further, pupfish were reared...

... response to thyroid hormone. This study describes larval development in left-sided, right-sided and bilaterally symmetric variants of southern flounder ( Paralichthys lethostigma ). Behavior and skull asymmetries precede metamorphosis, and the development of lateralized behaviors was independent of eye...

...Andreas Heyland; Leonid L. Moroz SUMMARY Thyroid hormones (THs) are small, lipophilic signaling molecules built from tyrosine and iodine. TH action is well characterized in vertebrates, where these molecules play a fundamental role as regulators of development,metabolism, growth and differentiation...

...Sean C. Lema; Gabrielle A. Nevitt SUMMARY Salmon have long been known to imprint and home to natal stream odors, yet the mechanisms driving olfactory imprinting remain obscure. The timing of imprinting is associated with elevations in plasma thyroid hormone levels,with possible effects on growth...

.... ( 1995 ). Downstream migratory behavior of salmonids and its relationship with cortisol and thyroid hormones: A review. Aquacult. 135 , 131 -139. Johnston, C. E. and Saunders, R. L. ( 1981 ). Parr-smolt transformation of yearling Atlantic salmon ( Salmo salar )at several rearing temperatures...

...., Kanamori, A., Schwartzman, R. A., Remo, B. F. and Pinder, A. ( 1996 ). The thyroid hormone-induced tail resorption program during Xenopus laevis metamorphosis. Proc. Natl. Acad. Sci. USA 93 , 1924 –1929. Buckbinder, L. and Brown, D. D. ( 1992 ). Thyroid hormone-induced gene expression changes...

...Rudy M. Ortiz; Duncan S. Mackenzie; Graham A. J. Worthy ABSTRACT Because thyroid hormones play a critical role in the regulation of metabolism, the low metabolic rates reported for manatees suggest that thyroid hormone concentrations in these animals may also be reduced. However, thyroid hormone...