PMID: 8614274Jan 1, 1996Paper

Simultaneous brain and blood microdialysis study with a new removable venous probe. Serotonin and 5-hydroxyindolacetic acid changes after D-norfenfluramine or fluoxetine

Life Sciences
X Paez, L Hernandez

Abstract

A removable intravenous microdialysis probe was developed and simultaneously used with a removable microdialysis probe placed in the lateral hypothalamus (LH). Serotonin (5-HT) and 5-hydroxyindoleacetic acid (5-HIAA) changes in blood and brain dialysates were measured by HPLC-EC after an i.p. injection of 5 mg/kg d-norfenfluramine (dNF) or 10 mg/kg fluoxetine (FLU) in freely moving rats. 5-HT in the LH significantly increased after both drugs, but the rise was larger and faster with dNF [F(7,28)=4.0 p<0.05] than with FLU [F(5,20)=5.0 p<0.01]. By contrast, in venous blood 5-HT increased after FLU [F(5,20)=2.96 p<0.05] but not after dNF. 5-HIAA after both drugs continued decreasing significantly in the LH [dNF F(7,28)=11.4 p<0.01; FLU F(5,20)=22.8 p<0.01], but it did not change in blood. Simultaneous dialysis in brain and blood allowed evaluation of the differential effects of dNF and FLU on 5-HT and 5-HIAA in the two places. Removable venous probes prevented the inflammatory reaction that may occur around permanently implanted probes, and the dialysis could be more efficient and with less risk of clogging.

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Citations

Apr 20, 2004·Progress in Neuro-psychopharmacology & Biological Psychiatry·David J BrunswickJay D Amsterdam
Jan 11, 2001·Physiology & Behavior·P F Frohlich, C M Meston
Jan 19, 1999·Journal of Chromatography. B, Biomedical Sciences and Applications·X Páez, L Hernández
Apr 16, 2014·Biomedical Chromatography : BMC·Samanta Yubero-LahozRafael de la Torre
Nov 12, 2003·Nutritional Neuroscience·J Ernie BlevinsDorothy W Gietzen
Aug 11, 2004·Prostaglandins, Leukotrienes, and Essential Fatty Acids·Brian Hallahan, Malcolm R Garland
Feb 9, 2002·Biopharmaceutics & Drug Disposition·X Páez, L Hernández
Mar 19, 1999·Brain, Behavior, and Immunity·R Mössner, K P Lesch

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