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Platelet serotonin level in rats is under genetic control.
1Department of Experimental Biology and Medicine, Ruder Boskovic Institute, Zagreb, Yugoslavia.
Psychiatry Research
|May 1, 1990
Summary
Platelet serotonin (5-hydroxytryptamine, 5HT) levels are a stable trait in rats. Selective breeding created distinct high and low serotonin sublines, confirming a strong genetic influence on this biological parameter.
Area of Science:
- Neuroscience
- Genetics
- Biochemistry
Background:
- Platelet serotonin (5-hydroxytryptamine, 5HT) levels (PSL) are individually stable in Wistar rats.
- PSL exhibits a unimodal frequency distribution and is not significantly affected by sex or age.
Purpose of the Study:
- To investigate the genetic basis of individual differences in PSL.
- To determine if PSL is a heritable trait.
Main Methods:
- Selective breeding of Wistar rats for extreme high and low PSL values.
- Analysis of PSL distribution in subsequent generations.
Main Results:
- Two distinct sublines with constitutionally low and high PSL were established by the fourth generation.
- These sublines showed statistically significant differences from the unselected population.
- No sex-dependent differences in inheritance patterns were observed.
Conclusions:
- Platelet serotonin levels in rats possess a significant heritable component.
- PSL is a characteristic trait influenced by genetic factors.