RNA and Protein Synthesis in Rat Brain during Exercise

Pharmacology ◽  
1979 ◽  
Vol 19 (1) ◽  
pp. 51-56 ◽  
Author(s):  
Carlo Guarnieri ◽  
Fernando Fussi ◽  
Ottorino Fanelli ◽  
Pierpaola Davalli ◽  
Carlo Clò
Keyword(s):  
Protein Synthesis ◽  
Rat Brain ◽  
Rna And Protein Synthesis

Mitochondrial DNA, RNA, and protein synthesis in different regions of developing rat brain

1979 ◽  
Vol 4 (1) ◽  
pp. 37-52 ◽  
Author(s):  
A. M. Giuffrida ◽  
M. N. Gadaleta ◽  
I. Serra ◽  
M. Renis ◽  
E. Geremia ◽  
...  
Keyword(s):  
Mitochondrial Dna ◽  
Protein Synthesis ◽  
Rat Brain ◽  
Rna And Protein Synthesis ◽  
Developing Rat

FEMALE ENDOCRINE CONTROL MECHANISMS DURING THE NEONATAL PERIOD

1972 ◽  
Vol 70 (2) ◽  
pp. 396-408 ◽  
Author(s):  
K.-D. Schulz ◽  
H. Haarmann ◽  
A. Harland
Keyword(s):  
Protein Synthesis ◽  
Reproductive System ◽  
Rna Synthesis ◽  
Neonatal Period ◽  
High Dose ◽  
Female Reproductive System ◽  
Endocrine Control ◽  
Hypothalamic Region ◽  
Rna And Protein Synthesis ◽  
Physiological Dose

ABSTRACT The present investigation deals with the oestrogen-sensitivity of the female reproductive system during the neonatal period. Newborn female guinea pigs were used as test animals. At different times after a single subcutaneous injection of a physiological dose of 0.1 μg or an unphysiologically high dose of 10 μg 17β-oestradiol/100 g body weight, the RNA- and protein-synthesis was examined in the hypothalamic region, pituitary, cerebral cortex, liver, adrenal gland, ovary and uterus. With a physiological dose an increase in organ weight, protein content, RNA-and protein-synthesis was found only in the uterus. These alterations turned out to be dose-dependent. In addition to the findings in the uterus an inhibition of the aminoacid incorporation rate occurred in the liver following the injection of the high oestradiol dose. As early as 1 hour after the administration of 0.1 μg 17β-oestradiol an almost 100% increase in uterine protein synthesis was detectable. This result demonstrates a high oestrogen-sensitivity of this organ during the neonatal period. All the other organs of the female reproductive system such as the hypothalamus, pituitary and ovary did not show any oestrogen response. Therefore the functional immaturity of the uterus during post partem life is not the result of a deficient hormone sensitivity but is correlated with the absence of a sufficient hormonal stimulus at this time. The investigation on the effects of actinomycin resulted in different reactions in the uterus and liver. In contrast to the liver a paradoxical actinomycin effect was found in the uterus after treatment with actinomycin alone. This effect is characterized by a small inhibition of RNA-synthesis and a 50% increase in protein synthesis. The treatment of the newborn test animals with actinomycin and 17β-oestradiol together abolished the oestrogen-induced stimulation of the uterine RNA-and protein-synthesis. Consequently, the effect of oestrogens during the neonatal period is also connected with the formation of new proteins via an increased DNA-directed RNA-synthesis.

Regulation of tubulin by triiodothyronine in hypothyroid rat brain

1985 ◽  
Vol 5 (8) ◽  
pp. 643-648 ◽  
Author(s):  
Anjana Mazumder ◽  
Kamal Das ◽  
Pranab K. Sarkar
Keyword(s):  
Protein Synthesis ◽  
Rat Brain ◽  
Brain Maturation ◽  
Normal Brain ◽  
Neonatal Brain ◽  
Organ Cultures ◽  
Postnatal Brain ◽  
Enhanced Sensitivity ◽  
Brain Exposure ◽  
Developing Rat

The effect of T3 (triiodothyronine) on the induction of tubulin in hypothyroid developing rat brain has been examined using organ cultures of brains from late fetal, neonatal and postnatalrats. The neonatal brain displayed maximum sensitivity to T3. Hypothyroidism resulted in a 26% decline in the level of tubulin in the neonatal brain as opposed to a 5–15% decline in the fetal or postnatal brain. Exposure of the hypothyroi d neonatal brain to T3 for 2 h in culture led to a 61% rise in the level of tubulin in contrast to a 41% increase seen in the case of normal brain. Total protein synthesis was not significantly affected. The preferential decline of tubulin in the neonatal hypothyroid brain, its enhanced sensitivity to T3 compared to normal brain, and the coincidence of the period of sensitivity to that of brain maturation indicate that the regulation of the level of tubulin by T3 in the developing brain is a natural ontogenic phenomenon.

Protein synthesis in rat brain during sleep

1981 ◽  
Vol 20 (5) ◽  
pp. 457-460 ◽  
Author(s):  
C. Shapiro ◽  
P. Girdwood
Keyword(s):  
Protein Synthesis ◽  
Rat Brain
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