Chick embryonic plasma proteins and binding capacity for corticosterone

Siegel, H. S.; Gould, N. R.

doi:10.1016/0012-1606(76)90169-x

Cited by 36 publications

(10 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The present results show that concentrations of glucocorticoids in plasma increase during embryonic development, which agrees with all previous studies although absolute values vary from report to report (Wise & Frye, 1973;Kalliecharan & Hall, 1974;Idler et al 1976;Siegel & Gould, 1976).…”

Section: Discussionsupporting

confidence: 94%

“…Data have been published on concentrations of adrenal hormones in plasma (Wise & Frye, 1973;Kalliecharan & Hall, 1974;Idler et al 1976;Siegel & Gould, 1976) or in the gland during development of the chick but values obtained by different authors vary widely and so it is difficult to draw general conclusions about the ontogenesis of the adrenal activity.…”

Section: Introductionmentioning

confidence: 97%

See 1 more Smart Citation

Ontogenesis of the Adrenal Glucocorticoids and of the Target Function of the Enzymatic Tyrosine Transaminase Activity in the Chick Embryo

Marie¹

1981

Journal of Endocrinology

View full text Add to dashboard Cite

Adrenal and plasma glucocorticoids were determined in developing chick embryos of Gallus domesticus from days 8 to 19 of incubation, using a competitive protein-binding assay. At the same time, tyrosine transaminase activity in the liver was studied as an adrenal-dependent target function. Total amounts of glucocorticoids in the adrenal gland increased from day 11 and reached 7 ng/pair of glands on day 19. This increase was related to growth of the adrenal since concentrations remained constant at about 380 pg/micrograms dry weight from days 9 to 18. Glucocorticoids appeared in the plasma on day 12 and their concentrations rose to 10 ng/ml on day 19, with a marked peak on day 13. This peak was not reflected in the tyrosine transaminase activity which appeared and developed independently of the variations in the circulating glucocorticoids.

show abstract

Section: Discussionsupporting

confidence: 94%

Section: Introductionmentioning

confidence: 97%

Ontogenesis of the Adrenal Glucocorticoids and of the Target Function of the Enzymatic Tyrosine Transaminase Activity in the Chick Embryo

Marie¹

1981

Journal of Endocrinology

View full text Add to dashboard Cite

show abstract

“…The serum corticosterone was initially quite high and decreased with age in both temperature groups (Table 3). Relatively high circulating corticosterone subsequent to hatching have been reported in other studies (Kalliecharan and Hall, 1974;Siegel and Gould, 1976;Satterlee et al, 1980;Scott et al, 1981). Serum corticosterone concentrations in both trials were significantly greater among chicks brooded at 26.7 C than at 32.2 C. There were significant differences in serum corticosterone levels on Days 1 and 5 in Trial 1 and on Days 1 and 3 in Trial 2.…”

Section: Resultsmentioning

confidence: 44%

Evaluation of Growth, Hormonal, and Hematological Responses of Neonatal Chickens to Reduced Temperature Brooding

Scott

Washburn

1985

Poultry Science

View full text Add to dashboard Cite

A series of experiments was conducted to examine the response of neonatal, male broiler chicks to brooding at a reduced temperature. In Trials 1 and 2, chicks brooded at 26.7 C generally had lower body weights and higher serum corticosterone levels during the first week after hatch than those brooded at 32.2 C. However, significant differences in body weight were observed only on Day 6 in Trial 1 and on Days 1 and 5 in Trial 2. Serum corticosterone levels, likewise, were not significantly different on all days in Trials 1 and 2. These hormone levels were statistically different on Days 1 and 5 in Trial 1 and on Days 1 and 3 in Trial 2. Brooding neonates at 26.7 C for 3 days in Trials 3 and 4 resulted in consistently lower body weights and gain and higher serum corticosterone, thyroxine, total protein, albumin, and globulin. Serum growth hormone levels in chicks brooded at 26.7 C were initially depressed the first day but were elevated on the 2 subsequent days, compared with chicks brooded at 32.2 C. Considering the physiological importance of corticosterone and thyroxine in the adaptation of chickens to cold environmental temperatures, it would be useful to evaluate the genetic variation associated with the responsiveness of these hormones in a randombred population and to improve tolerance of neonatal chickens to reduced temperature brooding through selection.

show abstract

“…Plasma corticosteroids in bird embryos show a decrease during (47) or preceding hatching (18). The plasma binding capacity for corticosterone and corticosteroid binding globulin (CBG) concentrations have been shown to decrease after days 15 or 16 of incubation (hatching at day 21) in the embryonic chicken, resulting in increased free corticosterone in the blood (14,37). This result suggested that higher levels of free glucocorticoids in blood were required and were being rapidly used by tissues in the last stages of in ovo development.…”

Section: Discussionmentioning

confidence: 99%

Glucocorticoids, thyroid hormones, and iodothyronine deiodinases in embryonic saltwater crocodiles

Shepherdley

Daniels

Orgeig

et al. 2002

American Journal of Physiology-Regulatory, Integrative and Comp

View full text Add to dashboard Cite

. Glucocorticoids, thyroid hormones, and iodothyronine deiodinases in embryonic saltwater crocodiles. Am J Physiol Regul Integr Comp Physiol 283: R1155-R1163, 2002. First published June 20, 2002 10.1152/ajpregu.00015.2002We investigated the relationship between glucocorticoids, thyroid hormones, and outer ring and inner ring deiodinases (ORD and IRD) during embryonic development in the saltwater crocodile (Crocodylus porosus). We treated the embryos with the synthetic glucocorticoid dexamethasone (Dex), 3,3Ј,5-triiodothyronine (T3), and a combination of these two hormones (Dex ϩ T3). The effects of these treatments were specific in different tissues and at different stages of development and also brought about changes in plasma concentrations of free thyroid hormones and corticosterone. Administration of Dex to crocodile eggs resulted in a decrease in 3,3Ј,5,5Ј-tetraiodothyronine (T4) ORD activities in liver and kidney microsomes, and a decrease in the high-K m rT3 ORD activity in kidney microsomes, on day 60 of incubation. Dex treatment increased the T 4 ORD activity in liver microsomes, but not kidney microsomes, on day 75 of incubation. Dex administration decreased T 3 IRD activity in liver microsomes. However, this decrease did not change plasma-free T 3 concentrations, which suggests that free thyroid hormone levels are likely to be tightly regulated during development.

show abstract

Chick embryonic plasma proteins and binding capacity for corticosterone

Cited by 36 publications

References 31 publications

Ontogenesis of the Adrenal Glucocorticoids and of the Target Function of the Enzymatic Tyrosine Transaminase Activity in the Chick Embryo

Ontogenesis of the Adrenal Glucocorticoids and of the Target Function of the Enzymatic Tyrosine Transaminase Activity in the Chick Embryo

Evaluation of Growth, Hormonal, and Hematological Responses of Neonatal Chickens to Reduced Temperature Brooding

Glucocorticoids, thyroid hormones, and iodothyronine deiodinases in embryonic saltwater crocodiles

Contact Info

Product

Resources

About