The Effect of X-Irradiation on 5-Hydroxytryptamine (Serotonin) Contents in the Small Intestines of Experimental Animals

The influence on 5-Hydroxytryptamine (5-HT) contents of small intestine of X-irradiation (500-2,000 r whole-body) was studied in rats, mice, guinea-pigs and rabbits. In order to examine the relationship between effect on 5-HT contents and intestinal injury by radiation, mean survival time and incide...

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Bibliographic Details
Published in:JOURNAL OF RADIATION RESEARCH 1962, Vol.3 (2), p.104-108
Main Authors: MATSUOKA, O, TSUCHIYA, T, FURUKAWA, Y
Format: Article
Language:English
Subjects:
Animals
Intestine, Small
Intestines
Radiation Effects
Serotonin
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Summary:The influence on 5-Hydroxytryptamine (5-HT) contents of small intestine of X-irradiation (500-2,000 r whole-body) was studied in rats, mice, guinea-pigs and rabbits. In order to examine the relationship between effect on 5-HT contents and intestinal injury by radiation, mean survival time and incidences of diarrhea were also observed in each species following irradiation. 5-HT contents of small intestine were remarkably reduced by exposure. The depressed level of 5-HT continued 48 hrs. There were great differences in normal contents of 5-HT and reduction rate after exposure among these species. It was found that the species which have high 5-HT contents and large reduction rate after exposure were sensitive to radiation. The radiation sensitivity of intestine seemed to be closely related with its endogenous 5-HT. Its possible relationship was discussed.
ISSN:0449-3060
1349-9157
DOI:10.1269/jrr.3.104