title: The bioactivity of 2,5-dimethoxy-4-ethylthiophenethylamine (2C-T-2) and its detection in rat urine by capillary electrophoresis combined with an on-line sample concentration technique.
abstract: The bioactivity of 2,5-dimethoxy-4-ethylthiophenethylamine (2C-T-2) on nitric oxide (NO) production and the proliferation of spleen and thymus lymphocytes to mitogen stimulation in mice are reported for the first time. NO production by T and B lymphocytes in spleen and T cells in the thymus of mice decreased after the oral administration of 2C-T-2. This indicates that 2C-T-2 intake may perturb both neural and immune activity since a decrease in NO production is indicative of a weakened defense function. 2C-T-2 (the parent drug) in rat urine samples was detected by means of capillary electrophoresis/UV absorbance combined with an on-line sample concentration technique. When the CZE and MEKC modes were employed, the detection limit was found to be 4.5 and 5.0 microg/mL (at a 92.1% confidence level); whereas when on-line sample concentration methods, including stacking and sweeping-micellar electrokinetic chromatography were used, the detection limits were improved to 19.2 and 9.1 ng/mL, respectively. In an analysis of some actual samples from animal experiments, three male rats were administered 20 microg/g of body weight of 2C-T-2 by intra-peritoneal injection. The first- and second-day urine fractions were collected after the administration, for use in the analysis. As a result, 2.9 microg/mL and 0.25 microg/mL of 2C-T-2, respectively, were detected after ingestion of the doses.
authors.affiliation: Department of Chemistry, National Taiwan Normal University, 88 Sec. 4, Tingchow Road, Taipei, Taiwan.
authors.forename: Yu-Chih
authors.initials: YC
authors.lastname: Chiu
authors.forename: Shiu-Huey
authors.initials: SH
authors.lastname: Chou
authors.forename: Ju-Tsung
authors.initials: JT
authors.lastname: Liu
authors.forename: Cheng-Huang
authors.initials: CH
authors.lastname: Lin
mesh_terms: D000818:Animals; D000840:Anisoles / Q000494:pharmacology* / Q000652:urine*; D019075:Electrophoresis, Capillary / Q000379:methods*; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D051381:Rats; D017208:Rats, Wistar; D012680:Sensitivity and Specificity; D013056:Spectrophotometry, Ultraviolet; D013440:Sulfides / Q000494:pharmacology* / Q000652:urine*
chemical_list: C490165:2,5-dimethoxy-4-ethylthiophenethylamine; D000840:Anisoles; D013440:Sulfides