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The effect of underfeeding on the percentage of water, on the ether-alcohol extract, and on medullation in the central nervous system of the albino rat

✍ Scribed by Henry H. Donaldson

Publisher
John Wiley and Sons
Year
1911
Tongue
English
Weight
313 KB
Volume
21
Category
Article
ISSN
0021-9967

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✦ Synopsis

In 1904 Hatai ('04) studied the effects of underfeeding on the growth of the brain and on the percentage of water in the brain of the albino rat. Through underfeeding for 21 days with a diet free from proteids, he was able in one series of rats which were about 55 days old at the beginning of the experiment and weighed 67 gms., to reduce the weight of the brain by 12.8 per cent below that of the controls. Since during this period the brain weight of the controls had increased 7.6 per cent, it is plain that three-fifths of the difference found was due to an arrest of growth, and the remaining two-fifths to an actual loss.1

When this series of brains was examined for the percentage of water, the following was found:

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We report the effects on the central nervous system (CNS) and on analgesic activity of an aqueous extract of Cistus populifolius L. The extract was assayed for effects on spontaneous locomotor activity, methylphenidate-induced hypermotility, motor coordination, exploratory behaviour, rectal temperat