scholarly journals Regulatory mechanisms of growth hormone secretion are sexually dimorphic.

1998 ◽  
Vol 102 (1) ◽  
pp. 153-164 ◽  
Author(s):  
C A Jaffe ◽  
B Ocampo-Lim ◽  
W Guo ◽  
K Krueger ◽  
I Sugahara ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Hormone Secretion ◽  
Growth Hormone Secretion ◽  
Regulatory Mechanisms ◽  
Sexually Dimorphic

scholarly journals Opposing Roles of Peroxisome Proliferator-activated Receptor α and Growth Hormone in the Regulation of CYP4A11 Expression in a Transgenic Mouse Model

2009 ◽  
Vol 284 (24) ◽  
pp. 16541-16552 ◽  
Author(s):  
Üzen Savas ◽  
Daniel E. W. Machemer ◽  
Mei-Hui Hsu ◽  
Pryce Gaynor ◽  
Jerome M. Lasker ◽  
...  
Keyword(s):  
Gene Expression ◽  
Growth Hormone ◽  
Transgenic Mice ◽  
Hormone Secretion ◽  
Growth Hormone Secretion ◽  
Peroxisome Proliferator ◽  
Sexually Dimorphic ◽  
Peroxisome Proliferator Activated Receptor ◽  
Liver And Kidney

CYP4A11 transgenic mice (CYP4A11 Tg) were generated to examine in vivo regulation of the human CYP4A11 gene. Expression of CYP4A11 in mice yields liver and kidney P450 4A11 levels similar to those found in the corresponding human tissues and leads to an increased microsomal capacity for ω-hydroxylation of lauric acid. Fasted CYP4A11 Tg mice exhibit 2–3-fold increases in hepatic CYP4A11 mRNA and protein, and this response is absent in peroxisome proliferator-activated receptor α (PPARα) null mice. Dietary administration of either of the PPARα agonists, fenofibrate or clofibric acid, increases hepatic and renal CYP4A11 levels by 2–3-fold, and these responses were also abrogated in PPARα null mice. Basal liver CYP4A11 levels are reduced differentially in PPARα−/− females (>95%) and males (<50%) compared with PPARα−/+ mice. Quantitative and temporal differences in growth hormone secretion are known to alter hepatic lipid metabolism and to underlie sexually dimorphic gene expression, respectively. Continuous infusion of low levels of growth hormone reduced CYP4A11 expression by 50% in PPARα-proficient male and female transgenic mice. A larger decrease was observed for the expression of CYP4A11 in PPARα−/− CYP4A11 Tg male mice to levels similar to that of female PPARα-deficient mice. These results suggest that PPARα contributes to the maintenance of basal CYP4A11 expression and mediates CYP4A11 induction in response to fibrates or fasting. In contrast, increased exposure to growth hormone down-regulates CYP4A11 expression in liver.

Hepatic steroid hydroxylating enzymes are controlled by the sexually dimorphic pattern of growth hormone secretion in normal and dwarf rats

1992 ◽  
Vol 6 (2) ◽  
pp. 711-718 ◽  
Author(s):  
Catherine Legraverend ◽  
Agneta Mode ◽  
Timothy Wells ◽  
Iain Robinson ◽  
Jan‐åke Gustafsson
Keyword(s):  
Growth Hormone ◽  
Hormone Secretion ◽  
Growth Hormone Secretion ◽  
Sexually Dimorphic

THE EFFECT OF BETA-RECEPTOR BLOCKADE ON EXERCISE AND ARGININE-INDUCED GROWTH HORMONE SECRETION IN MAN

1974 ◽  
Vol 77 (1_Suppl) ◽  
pp. S6 ◽  
Author(s):  
S. Raptis ◽  
H. Hirth-Schmidt ◽  
K. E. Schröder ◽  
E. F. Pfeiffer
Keyword(s):  
Growth Hormone ◽  
Hormone Secretion ◽  
Growth Hormone Secretion ◽  
Receptor Blockade ◽  
Beta Receptor ◽  
Beta Receptor Blockade

Growth hormone secretion in children treated for medulloblastoma

2018 ◽  
Author(s):  
Alexey Kalinin ◽  
Natalia Strebkova ◽  
Olga Zheludkova ◽  
Maria Kareva
Keyword(s):  
Growth Hormone ◽  
Hormone Secretion ◽  
Growth Hormone Secretion
Sign in / Sign up

Export Citation Format

Share Document