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PubMed · 10318745

Depression.

Abstract

Depression often presents with physical symptoms, primarily fatigue, pain, or sleep disturbance. Depressed mood may or may not be present. Supportive counseling and pharmacotherapy are more effective than either modality alone. The newer drugs are better tolerated than earlier agents, and they achieve much greater patient adherence. Depression is considered a chronic disease. The likelihood of recurrence increases with the number of episodes, often calling for prolonged maintenance of medication. Most patients with mild to moderate depression can be effectively managed by their primary care physician, with referral required only for those who are unresponsive to therapy or who are suicidal.

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BibTeXRIS

R E Rakel. 1999. Depression.. https://doi.org/10.1016/s0095-4543(08)70003-4

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Separation of new antidepressants and their metabolites by micellar electrokinetic capillary chromatography.

Selective serotonin reuptake inhibitors (SSRIs), serotonin noradrenergic reuptake inhibitors (SNaRIs) and noradrenergic and specific serotoninergic antidepressant (NaSSA) are widely used in the treatment of depression. An increase in antidepressant intoxications led to the development of reliable analytical methods for their analysis. A new determination procedure for these compounds (milnacipran, venlafaxine, desmethylvenlafaxine, mirtazapine, desmethylmirtazapine, citalopram, desmethylcitalopram, fluvoxamine, paroxetine, sertraline and fluoxetine) was developed by micellar electrokinetic capillary chromatography (MEKC) with diode array detection (DAD). Separation and determination were optimised on an uncoated fused-silica capillary (600 mm, 75 microm I.D.). The migration buffer consisted of 20 mM sodium borate, pH 8.55, with 20 mM SDS and 15% isopropanol, at an operating voltage of 25 kV. The column temperature was maintained at 40 degrees C. Injection in the capillary was performed in the hydrodynamic mode (0.5 p.s.i., 15 s). In these conditions, the migration time of the antidepressants was less than 11 min. In most cases, calibration curves were established for 30 - 2000 ng/ml (r > 0.995). The limit of detection and the limit of quantification were ranged between 10 and 20 and between 20 and 30 ng/ml, respectively, for all the molecules. This method allowed the determination of some of these compounds in biological fluids (blood, urine) in post-mortem cases. Samples (1 ml) were extracted with diethyl ether (5 ml) at pH 9.6 and reconstituted in diluted migration buffer. Similar results were obtained by a HPLC-DAD determination, performed as a reference method. These results suggest that this MEKC method can be useful for the determination of new antidepressants in post-mortem cases.

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