REFERENCES
- Capasso A., Di Giannuario A., Loizzo A., Pieretti S. and Sorrentino, L. (1991) Dexamethasone induces biphasic effects on morphine hypermotility in mice. Life Sci. 49: 1411–1418.
- Capasso A., Di Giannuario A., Loizzo A., Pieretti S. and Sorrentino L. (1992) Central interaction of dexametha- sone and RU-38486 on morphine antinociception in mice. Life Sci. 52: PL-139-143.
- Cruz-Sanchez G. (1948) Informe sobre las aplicaciones populares de la cimora en el norte del Perù. Rev. Farm. Med. Exp. (Lima) 1: 253–258.
- De Feo V. (1992) Medicinal and magical plants on north- en Peruvian Andes. Fitoterapia 63: 417–440.
- Dobkin de Rios M., (1977) Plant hallucinogens and the religion of the Mochica-An ancient Peruvian people. Econ. Bot. 31: 189–203.
- Fog R. (1972) On the stereotypy and catalepsy: studies on the effect of amphetamine and neuroleptics in rats. Acta Neurol. Scand. (Suppl.) 50: 3–66.
- Friedberg C. (1959) Rapport sommarie sur une mission au Pérou. J. Agric. Trop. Bot. Appl. 6: 8–9.
- Kiritsy-Roy J.A., Standish S.M. and Terry L.C. (1989) Dopamine D1 and D2 receptor antagonists potentiate analgesic and motor effects of morphine. Pharmacol. Biochem. and Behav. 32: 717–721.
- Hecht A. and Schiorring E. (1979). Behavioral effects of low and high acute doses of morphine in solitary mice. Psychopharmacology 64: 73–79.
- Jaffe J.H. (1990) Drugs addiction and drug abuse. In: The Pharmacological Basis of Therapeutics, ed. by A. Gil- man, L.S. Goodman, T.W. Rall and F. Murad 8th edn, pp. 553-573. McMillan, New York.
- Malcangio M., Ghelardini C., Giotti A., Malmberg-Aiello P. and Bartolini A. (1991) CGP 35348, a new GABAB antagonist, prevents antinociception and muscle-relaxant effect induced by baclofen. Br. J. Pharmacol. 103:</b>1303-1308.
- Pieretti S., Capasso A., Di Giannuario A., Loizzo A. and Sorrentino L. (1991) The interaction of peripherally and centrally administered dexamethasone and RU-38486 on morphine analgesia in mice. Gen. Phar- macol. 22: 829–933.
- Pieretti S., Di Giannuario A., Capasso A., Nicoletti M. (1992) Pharmacological effects of phenylpropanoid gly- cosides from Orobanche hederae. Phytotherapy Res. 6: 89–93.
- Pieretti S., Di Giannuario A., Capasso A., Sorrentino L. and Loizzo A. (1994) Effects induced by cysteamine on chemically-induced nociception in mice. Life Sci. 54: 1091–1099.