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  • Title: Effects of hemodynamic changes on taurine release from posterior hypothalamus of freely moving rats.
    Author: Guo LJ, Athineos P.
    Journal: Zhongguo Yao Li Xue Bao; 1995 Sep; 16(5):405-8. PubMed ID: 8701754.
    Abstract:
    AIM: To study the effects of blood volume and vascular resistance on taurine release. METHODS: We used push-pull superfusion technique in the posterior hypothalamus of conscious freely moving rats. Taurine was determined in the superfusate by HPLC with fluorescence detection following automatic precolumn o-phthaldialdehyde (OPA) derivatization. RESULTS: Hypervolemia increased the release of taurine in the hypothalamus. Intravenous infusion of levarterenol (3 micrograms kg-1 min-1) elicited a pronounced pressor response and an increase in the release of taurine. Conversely, a controlled hemorrhagic hypotension or iv infusion of nitroprusside (30 micrograms kg-1 min-1) elicited a hypotension and a decrease in the release of taurine from the posterior hypothalamus. CONCLUSION: In the posterior hypothalamus, taurine might play an important role in central blood pressure regulation.
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