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Long-term Isolation in Rats reduces Morphine Response

Abstract

RECENTLY, interest has increased in the effects of previous home environments on reactions to drugs (for example, ref. 1) and experiments have been done on various species. Long-term isolation is known to induce aggressive behaviour and biochemical changes in mice2, and it also disrupts behavioural and physiological reactions in rats3,4. Isolation in both species increases their sensitivity to toxic effects of some stimulant drugs5,6, but shortens barbiturate sleeping times in mice7 and rats8, and reduces the stimulant effects of amphetamine-barbiturate mixtures on the activity of rats in a Y-maze (Clarke, Rushton and H. S., to be published). It seemed important to study the effects of long-term isolation on some responses by rats to morphine.

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References

  1. Rushton, R., and Steinberg, H., Anim. Behav., 14, 585 (1966).

    Google Scholar 

  2. Garattini, S., Giacolone, E., and Valzelli, L., J. Pharm. Pharmacol., 19, 338 (1967).

    Article  CAS  Google Scholar 

  3. Hahn, W. W., J. Psychosom. Res., 8, 455 (1965).

    Article  CAS  Google Scholar 

  4. Moyer, K. E., and Korn, J. H., Psychon. Sci., 3, 503 (1965).

    Article  Google Scholar 

  5. Balazs, T., Murphy, J. B., and Grice, H. C., J. Pharm. Pharmacol., 14, 750 (1962).

    Article  CAS  Google Scholar 

  6. Welch, B. L., and Welch, A. S., J. Pharmacol. Exp. Ther., 151, 331 (1966).

    CAS  PubMed  Google Scholar 

  7. Baumel, I., DeFeo, J. J., and Lal, H., Psychopharmacologia, 15, 153 (1969).

    Article  CAS  Google Scholar 

  8. Dairman, W., and Balazs, T., Biochem. Pharmacol., 19, 951 (1970).

    Article  CAS  Google Scholar 

  9. Rushton, R., Steinberg, H., and Tinson, C., Nature, 192, 533 (1961).

    Article  ADS  Google Scholar 

  10. Samanin, R., Gumulka, W., and Valzelli, L., Europ. J. Pharmacol., 10, 339 (1970).

    Article  CAS  Google Scholar 

  11. Tenen, S. S., Psychopharmacologia, 12, 278 (1968).

    Article  CAS  Google Scholar 

  12. Way, E. L., Loh, H. H., and Shen, F., Science, 162, 1290 (1968).

    Article  ADS  CAS  Google Scholar 

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KATZ, D., STEINBERG, H. Long-term Isolation in Rats reduces Morphine Response. Nature 228, 469–471 (1970). https://doi.org/10.1038/228469a0

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