Effects of Injections and/or Chronic Implants of Melatonin and 5-Methoxytryptamine on Plasma Thyroid Hormones in Male and Female Syrian Hamsters

1984 ◽  
Vol 39 (4) ◽  
pp. 361-366 ◽  
Author(s):  
Mary K. Vaughan ◽  
Bruce A. Richardson ◽  
Larry J. Petterborg ◽  
Anke P. Holtorf ◽  
George M. Vaughan ◽  
...  
Keyword(s):  
Thyroid Hormones ◽  
Male And Female ◽  
Syrian Hamsters

Injections and/or implants of 6-chloromelatonin and melatonin: effects on plasma thyroid hormones in male and female syrian hamsters

1984 ◽  
Vol 20 (6) ◽  
pp. 1471
Author(s):  
M.K. Vaughan ◽  
B.A. Richardson ◽  
L.J. Petterborg ◽  
G.M. Vaughan ◽  
R.J. Reiter
Keyword(s):  
Thyroid Hormones ◽  
Male And Female ◽  
Syrian Hamsters

scholarly journals INJECTIONS AND/OR IMPLANTS OF 6-CHLOROMELATONIN AND MELATONIN: EFFECTS ON PLASMA THYROID HORMONES IN MALE AND FEMALE SYRIAN HAMSTERS

1984 ◽  
Vol 5 (5) ◽  
pp. 413-418 ◽  
Author(s):  
MARY K. VAUGHAN ◽  
BRUCE A. RICHARDCON ◽  
LARRY J. PETTERBORG ◽  
GEORGE M. VAUGHAN ◽  
RUSSEL J. REITER
Keyword(s):  
Thyroid Hormones ◽  
Male And Female ◽  
Syrian Hamsters

Effect of Cholesterol Feeding on DNA Damage in Male and Female Syrian Hamsters

1999 ◽  
Vol 43 (1) ◽  
pp. 47-51 ◽  
Author(s):  
E. Turley ◽  
N.C. Armstrong ◽  
J.M.W. Wallace ◽  
W.S. Gilmore ◽  
V.J. McKelvey-Martin ◽  
...  
Keyword(s):  
Dna Damage ◽  
Cholesterol Feeding ◽  
Male And Female ◽  
Syrian Hamsters

Conditioned defeat in male and female syrian hamsters

2003 ◽  
Vol 44 (3) ◽  
pp. 293-299 ◽  
Author(s):  
Kim L Huhman ◽  
Matia B Solomon ◽  
Marcus Janicki ◽  
Alvin C Harmon ◽  
Stacie M Lin ◽  
...  
Keyword(s):  
Male And Female ◽  
Syrian Hamsters ◽  
Conditioned Defeat

scholarly journals Social housing and social isolation: Impact on stress indices and energy balance in male and female Syrian hamsters ( Mesocricetus auratus )

2017 ◽  
Vol 177 ◽  
pp. 264-269 ◽  
Author(s):  
Amy P. Ross ◽  
Alisa Norvelle ◽  
Dennis C. Choi ◽  
James C. Walton ◽  
H. Elliott Albers ◽  
...  
Keyword(s):  
Energy Balance ◽  
Social Isolation ◽  
Social Housing ◽  
Mesocricetus Auratus ◽  
Male And Female ◽  
Stress Indices ◽  
Syrian Hamsters

Melatonin increases the ratio of 5-hydroxyindoleacetic acid to serotonin in the hypothalamus and brainstem concurrently with gonadal involution in male Syrian hamsters

1991 ◽  
Vol 69 (4) ◽  
pp. 1004-1009 ◽  
Author(s):  
J. Vriend
Keyword(s):  
Luteinizing Hormone ◽  
Thyroid Hormones ◽  
Serum Levels ◽  
Mediobasal Hypothalamus ◽  
Serotonergic Neurons ◽  
Catecholamine Synthesis ◽  
Syrian Hamsters ◽  
Catecholamine Turnover ◽  
Hydroxyindoleacetic Acid

Gonadal involution, with reduced serum levels of luteinizing hormone and prolactin, was induced in male Syrian hamsters by daily injections of melatonin, given in the evening. Highly significant increases in daytime concentrations of 5-hydroxyindoleacetic acid (5-HIAA) and in the ratio of 5-HIAA to serotonin (5-HT) were noted in extracts of mediobasal hypothalamus of melatonin-treated hamsters. An increase in the 5-HIAA/5-HT ratio, with decreased 5-HT concentrations, was found in brainstem extracts of hamsters treated with melatonin. The increase in the 5-HIAA/5-HT ratio was not prevented by inhibition of catecholamine synthesis with α-methyl-p-tyrosine, which suggests that the melatonin-induced increase in the 5-HIAA/5-HT ratio was not due to changes in catecholamine turnover. These results are consistent with the view that serotonergic neurons terminating in the hypothalamus mediate the melatonin-induced inhibition of luteinizing hormone, prolactin, and thyroid hormones accompanying gonadal involution.

scholarly journals Corticosteroid-binding globulin in experimental hypothyroidism in male and female rats

2000 ◽  
Vol 46 (5) ◽  
pp. 35-39
Author(s):  
L. I. Nadolnik ◽  
N. V. Emelyanov ◽  
I. P. Pasteur ◽  
V. V. Vinogradov
Keyword(s):  
Biological Activity ◽  
Thyroid Hormones ◽  
Binding Sites ◽  
Young Male ◽  
Female Rats ◽  
Male And Female ◽  
Male And Female Rats ◽  
Corticosteroid Binding Globulin ◽  
Daily Dose

Main parameters of complex formation of corticosteroid-binding globulin (CSG) were studied in young male and female rats with hypothyrosis induced by mercasolyl in a daily dose of 6 and 30 mg/kg. No pronounced differences in CSG, typical of adult animals, were observed in young rats under conditions of thyroid function inhibition. Steroidand androgen-inhibitory and estrogen-inducing effects of hormones towards CSG did not manifest in hypothyrosis. Decrease in the level of thyroid hormones is characterized by increased affinity of CSG for glucocorticoids and a decrease in the concentration of binding sites. These data indicate that thyroid hormones are the primary regulators of CSG activity. Possibility of modifying CSG affinity and role of this factor in regulation of biological activity of glucocorticoids are discussed.

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