scholarly journals Long-term administration of the dopamine D3/2 receptor agonist pramipexole increases dopamine and serotonin neurotransmission in the male rat forebrain

2012 ◽  
Vol 37 (2) ◽  
pp. 113-121 ◽  
Author(s):  
Olga Chernoloz ◽  
Mostafa El Mansari ◽  
Pierre Blier
Keyword(s):  
Receptor Agonist ◽  
Male Rat ◽  
Term Administration ◽  
Rat Forebrain ◽  
Dopamine D3

scholarly journals Effect of Short- and Long-Term Administration of Baclofen on Spatial Learning and Memory in Rats

2018 ◽  
pp. 133-141 ◽  
Author(s):  
M. HOLAJOVA ◽  
M. FRANEK
Keyword(s):  
Learning And Memory ◽  
Spatial Learning ◽  
Receptor Agonist ◽  
Gabab Receptor ◽  
Spatial Learning And Memory ◽  
Adult Rats ◽  
Treatment Groups ◽  
Term Administration ◽  
Short And Long Term

Baclofen is the only clinically available metabotropic GABAB receptor agonist. In our experiment, we tested the hypothesis that long-term baclofen administration can impair learning and memory in rats. The experiment consisted of three parts. In the first part of the study the drug was administered simultaneously with the beginning of the behavioral tests. In the second and third part of the experiment baclofen was administered daily for 14 days and for one month before the tests. In each part of the experiment, adult rats were randomly divided into four treatment groups. Three groups were given an injection of baclofen at doses of 1 mg/kg, 5 mg/kg, 10 mg/kg, while the fourth group was injected with saline. The injections were given after each session. Spatial learning and memory were tested using the Morris water maze, involving three types of tests: Acquisition, Probe, and Re-acquisition. This work reveals that baclofen did not affect spatial learning at any of the tested doses and regardless of the length of administration. Memory was observed to be affected, but only at the highest dose of baclofen and only temporarily. This conclusion is in line with previously published clinical cases.

The efficacy and safety of long-term administration of alpha-interferon and lamivudine in patients with chronic hepatitits B

2001 ◽  
Vol 120 (5) ◽  
pp. A572-A572
Author(s):  
F JABOLI ◽  
E RODA ◽  
C FABBRI ◽  
S MARCHETTO ◽  
F FERRARA ◽  
...  
Keyword(s):  
Alpha Interferon ◽  
Efficacy And Safety ◽  
Term Administration

STUDIES IN THE SUPPOSED GOITROGENOUS EFFECT OF TAP WATER IN HELSINKI

1960 ◽  
Vol XXXIII (IV) ◽  
pp. 630-636
Author(s):  
F.-E. Krusius ◽  
P. Peltola
Keyword(s):  
Tap Water ◽  
Physiological Saline ◽  
Normal Weight ◽  
The Body ◽  
Iodine Uptake ◽  
Redistilled Water ◽  
Detectable Difference ◽  
Term Administration ◽  
Long Term Experiment

ABSTRACT The study reported here was performed in order to examine the tap water of Helsinki for its alleged goitrogenous effect. In a short-term, 24-hour experiment with rats, kept on an iodine-poor diet, we noticed no inhibition of the 4-hour 131I uptake, as compared with that of animals receiving physiological saline instead of tap water. Two similar groups of rats receiving 1 and 2 mg of mercazole in redistilled water showed a distinct blockage of the 4-hour uptake, which proved the effect of this substance. In a long-term experiment of 5 weeks' duration there was no detectable difference in the body weight, thyroid weight and the 4-hour 131I uptake when the rats receiving tap water or distilled water to which 0.45 per cent of sodium chloride was added were compared with each other. Replacement of tap water by a 10 mg per cent solution of mercazole in redistilled water enlarged the thyroid to double its normal weight and increased the 131I uptake to approximately five times that of the controls. Thus our experiments failed to demonstrate any goitrogenous effect in the tap water of Helsinki. Changes similar to those produced by a long-term administration of mercazole, i. e. an enlargement of the thyroid and an increased thyroidal iodine uptake, have been shown to be due to milk collected from goitrous areas. The observations here reported confirm the importance of milk in the genesis of the goitre endemia of Helsinki. Attention is further called to the fact that a thyroidal enlargement combined with an increased thyroidal iodine uptake cannot always be taken as a sign of iodine deficiency because similar changes may be produced by the administration of goitrogens.

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