Fluoxetine: relationships among dose, response, adverse events, and plasma concentrations in the treatment of depression

Data from two large, fixed-dose trials support the efficacy of a fixed 20 mg/day dose of fluoxetine in the treatment of depression. Data pooled from these two studies suggest a dose relationship for adverse events during fluoxetine therapy. At a fixed 20 mg/day dose, only nausea and insomnia were reported by a significantly greater percentage of patients (p less than .05) than those treated with placebo. However, at 60 mg/day, nausea, anxiety, dizziness, and insomnia were reported by a significantly greater percentage of patients (p less than .05) than those treated with placebo. The potential relationship of response rate [Hamilton Rating Scale for Depression (HAM-D) total decrease greater than or equal to 50%] to plasma concentrations of fluoxetine, norfluoxetine, and fluoxetine plus norfluoxetine was evaluated in one study which excluded early responders (less than or equal to 3 weeks of therapy). No significant relationship was found. Furthermore, adverse events were not related to plasma concentrations.     

盐酸安非他酮缓释片治疗抑郁症的Ⅱ期临床研究

目的 评价盐酸安非他酮缓释片治疗轻中度抑郁症的临床疗效和安全性。方法 对符合《CCMD》勘抑郁症诊断标准的66例抑郁症患者进行盐酸安非他酮缓释片和氟西汀的对照研究，其中盐酸安非他酮缓释片组34例（300mg／d），氟西汀组32例（20mg／d），共治疗6周。采用汉密尔顿抑郁量表（HAMD），汉密尔顿焦虑量表（HAMA），临床总体评定量表（CGI）评定临床疗效，副反应量表（Tess）评定不良反应。结果经6w治疗后，盐酸安非他酮缓释片治疗总有效率为76．47％，氟西汀组为75．00％，两组比较。差异无显著性（P〉0．05）。两组的HAMD，HAMA评分治疗前后相比较差异有高度显著性（P〈0．01）。不良反应分析，两组药物不良反应的发生率无显著性差异（P〉0．05），常见的不良反应有恶心、口干、头昏、失眠、出汗、食欲减退、便秘等。结论 盐酸安非他酮缓释片治疗抑郁症安全有效。     

瑞波西汀治疗抑郁症的Ⅱ期临床观察

目的评价瑞波西汀片治疗抑郁症的临床疗效和安全性。方法对符合《CCMD-3》抑郁症诊断标准的46例抑郁症患者进行瑞波西汀片和氟西汀的随机双盲对照研究,其中瑞波西汀片组22例(8mg/d),氟西汀组24例(20mg/d),共治疗6周。采用汉密尔顿抑郁量表(HAMD),汉密尔顿焦虑量表(HAMA),临床总体评定量表(CGI)评定临床疗效,不良事件量表评定安全性。结果经6周治疗后,瑞波西汀片组治疗总有效率为69.57%,氟西汀组为76.00%,两组相比较,差异无显著性(P>0.05)。两组的HAMD,HAMA评分治疗前后相比较差异有高度显著性(P<0.01)。不良反应分析,两组药物不良反应的发生率无显著性差异(P>0.05),常见的不良反应有口干、出汗、恶心、便秘等。结论瑞波西汀片治疗抑郁症疗效好,安全性较高,适合临床应用。     

Pindolol and mianserin augment the antidepressant activity of fluoxetine in hospitalized major depressed patients, including those with treatment resistance

The aims of this study were to examine whether pindolol, a serotonin (5-hydroxytryptamine [5-HT])-1A receptor antagonist, and mianserin, a 5-HT2A/C and alpha2-adrenoceptor (alpha2-AR) antagonist, may augment the clinical efficacy of fluoxetine, a selective serotonin reuptake inhibitor, and shorten the latency of onset of antidepressive activity in the treatment of major and treatment-resistant depression (TRD). Ten days after admission to the hospital, 31 major depressed patients were randomly assigned using a double-blind, controlled design to receive fluoxetine 20 mg daily, fluoxetine 20 mg daily plus pindolol 7.5 mg daily, or fluoxetine 20 mg plus mianserin 30 mg daily for 5 weeks. The 17-item Hamilton Rating Scale for Depression (HAM-D) score was the primary outcome measure. Analysis of efficacy was conducted according to the intent-to-treat analysis principle considering the change from baseline to endpoint. It was found that fluoxetine plus pindolol and fluoxetine plus mianserin were significantly more effective than fluoxetine alone. Using an outcome measure of 50% reduction in the HAM-D, a 60% response rate was found in patients treated with either fluoxetine plus pindolol or fluoxetine plus mianserin compared with a 9% response rate in patients treated with fluoxetine alone. The HAM-D score 1 week after starting fluoxetine plus mianserin decreased more than 4 points and was significantly greater than that obtained by fluoxetine alone. The results suggest that pindolol and mianserin augment the efficacy of fluoxetine in the treatment of TRD and that mianserin, but not pindolol, may significantly shorten the latency of onset of antidepressive action when combined with fluoxetine.     

珠海地区311例药品不良事件报告分析

目的:了解珠海地区药品不良事件(ADE)发生的特点及规律。方法:对广东省不良反应监测中心珠海工作站于2005年8月~2006年12月收集到的311例ADE报告,从患者性别、年龄、给药途径、涉及药物品种、涉及器官或系统及临床表现等进行统计分析。结果:抗感染药的ADE发生率最高,有213例(占68.49%);ADE主要临床表现为皮肤及其附件损害,有160例(占51.45%),经过相应的治疗均恢复正常。结论:医务工作者在用药前应询问患者自身及家族过敏史,注意药物配伍禁忌,用药后认真观察,尽量减少ADE发生。