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The levels of tryptophan and the serotonin (5-HT) turnover were examined in various brain regions of rats after single or repeated treatment with the selective 5-HT uptake inhibitor, sertraline. A single administration of sertraline (10mg/kg, i.p.) increased tryptophan and 5-HT levels in all the brain regions investigated. The levels of 5-hydroxyindolacetic acid (5-HIAA) decreased in various brain regions. The 5-HIAA/5-HT ratio as turnover index was significantly decreased by a single administration of sertraline in all the brain regions investigated. Daily treatment with sertraline (10mg/kg) for 21 days did not affect tryptophan and 5-HT levels in various brain regions 1h after last injection. The 5-HT turnover was not changed in any of the brain regions investigated by a repeated administration of sertraline. In conclusion, the data show that the increase in tryptophan levels and the decrease in 5-HT turnover in rat brain are attenuated by repeated treatment of sertraline.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12464401&dopt=Abstract
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Pharmacoepidemiol Drug Saf. 2002 Dec;11(8):655-62.
Adverse events in users of sertraline: results from an observational study in psychiatric practice in The Netherlands.
Meijer WE, Heerdink ER, van Eijk JT, Leufkens HG.
Department of Pharmacoepidemiology and Pharmacotherapy, Utrecht Institute for Pharmaceutical Sciences (UIPS), PO Box 80.082, 3508 TB Utrecht, The Netherlands.
PURPOSE: To evaluate the safety profile of sertraline versus other Selective Serotonin Reuptake Inhibitors (SSRIs) directly following the introduction of sertraline to the Dutch market. METHODS: In a prospective follow-up study, 109 psychiatrists included patients with a new episode of treatment with sertraline and an equal number of patients starting treatment with other SSRIs. All Adverse Events (AEs) during follow-up were recorded by the psychiatrists for the duration of SSRI treatment until discontinuation or until at least 12 months. RESULTS: A total of 1251 patients were included in the study of which 659 used sertraline and 592 used other SSRIs (paroxetine, fluoxetine or fluvoxamine). The most frequently reported events in sertraline users and users of other SSRIs were nausea (160 (24.3%) sertraline patients versus 160 (27.0%) patients using other SSRIs), headache (127 (19.3%) sertraline patients versus 101 (17.1%) patients using other SSRIs), diarrhoea (94 (14.0%) sertraline patients versus 40 patients using other SSRIs (6.8%, p < 0.05)), sweating (88 (13.4%) sertraline patients versus 69 (11.7%) patients using other SSRIs) and dizziness (75 (11.4%) sertraline patients versus 70 (11.8%) patients using other SSRIs). A total of 121 patients reported 134 different unlabelled AEs of which 10 were reported by more than 1% of the population. CONCLUSIONS: In this study we found that almost three out of four patients reported an adverse event. When comparing with other SSRIs and the literature, we found a similar distribution of the most frequently reported adverse events in patients using sertraline. However, in this observational study we found over 100 different unlabelled adverse events.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12512241&dopt=Abstract
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J Clin Psychiatry. 1999 Aug;60(8):519-23.
Excretion of paroxetine into breast milk.
Ohman R, Hagg S, Carleborg L, Spigset O.
Department of Psychiatry, Ostersund Hospital, Sweden.
BACKGROUND: The study was carried out to quantify the excretion of the selective serotonin reuptake inhibitor paroxetine in breast milk. METHOD: In 6 lactating women, the concentrations of paroxetine in breast milk and serum were studied at the times for assumed minimum (24 hours after dose intake) and maximum (4-7 hours after dose intake) drug levels in milk. Moreover, a seventh subject was studied with frequent and regular sampling throughout a dose interval of 24 hours at 2 different dose levels. RESULTS: The mean milk/serum concentration ratios in the first 6 subjects ranged from 0.39 to 1.11 (overall mean +/- SD = 0.69 +/- 0.29), and the mean estimated dose to the infants ranged from 0.7% to 2.9% (overall mean +/- SD = 1.4% +/- 0.79%) of the weight-adjusted maternal dose. Based on area-under-the-curve data from the seventh subject, the milk/serum concentration ratio was 0.69 at a dose of 20 mg/day and 0.72 at a dose of 40 mg/day; the estimated relative doses to the infant were 1.0% and 2.0%, respectively. The mean increase in milk paroxetine concentrations from assumed minimum to assumed maximum was 61% (range, 4%-172%; p < .01). The mean paroxetine concentration in hindmilk was 78% higher than in foremilk (range, 16%-169%; p < .01), an increase that was parallel to the increase in milk triglyceride levels (r = 0.83, p = .005). No adverse drug reactions or unusual behaviors were reported in the infants. CONCLUSION: The study indicates that the relative dose to a suckling infant for paroxetine is lower than that reported for fluoxetine and citalopram and higher than that reported for sertraline and fluvoxamine.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=10485633&dopt=Abstract
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