GENetic and clinical Predictors Of treatment response in Depression: the GenPod randomised trial protocol Polymorphism of the 5-HT transporter and response to antidepressants: randomised controlled trial. Antidepressant treatment of chronic tension-type headache: a comparison between fluoxetine and desipramine. Efficacy and Tolerability of Reboxetine Compared with Citalopram: A Double-blind Study in Patients with Major Depressive Disorder A Review of Vilazodone, Serotonin, and Major Depressive Disorder Lack of sexual dysfunction with the selective noradrenaline reuptake inhibitor reboxetine during treatment for major depressive disorder Antidepressant efficacy and tolerability of milnacipran, a dual serotonin and noradrenaline reuptake inhibitor: a comparison with fluvoxamine Dexamethasone Suppression Test and the Response to Antidepressant Depending on Their Central Monoaminergic Action in Major Depression Severity of depression and response to antidepressants: GENPOD randomised controlled trial. A randomised, double-blind study in adults with major depressive disorder with an inadequate response to a single course of selective serotonin reuptake inhibitor or serotonin–noradrenaline reuptake inhibitor treatment switched to vortioxetine or agomelatine† Brain-derived neurotrophic factor Val66Met polymorphism and 6-month antidepressant remission in depressed Caucasian patients. World Federation of Societies of Biological Psychiatry (WFSBP) Guidelines for the Pharmacological Treatment of Anxiety, Obsessive-Compulsive and Post-Traumatic Stress Disorders – First Revision Prediction of the response to citalopram and reboxetine in post-stroke depressed patients Controlled comparison of milnacipran and fluoxetine in major depression Diminished Neural Processing of Aversive and Rewarding Stimuli During Selective Serotonin Reuptake Inhibitor Treatment Combination of inositol and serotonin reuptake inhibitors in the treatment of depression Reboxetine, the first selective noradrenaline reuptake inhibitor antidepressant: Efficacy and tolerability in 2613 patients Noradrenaline-selective versus serotonin-selective antidepressant therapy: differential effects on social functioning.
Background The most effective pharmacological treatments for depression inhibit the transporters that reuptake serotonin ( Selective Serotonin Reuptake Inhibitors – SSRIs ) and noradrenaline ( Noradrenaline Reuptake Inhibitors – NaRIs ) into the presynaptic terminal . There is evidence to suggest that noradrenaline and serotonin enhancing drugs work through separate mechanisms to produce their clinical antidepressant action . Although most of the current evidence suggests there is little difference in overall efficacy between SSRIs and NaRIs , there are patients who respond to one class of compounds and not another . This suggests that treatment response could be predicted by genetic and /or clinical characteristics . Firstly , this study aims to investigate the influence of a polymorphism ( SLC6A4 ) in the 5HT transporter in altering response to SSRI medication . Secondly , the study will investigate whether those with more severe depression have a better response to NaRIs than SSRIs . Methods / design The GenPod trial is a multi-centre r and omised controlled trial . GPs referred patients aged between 18–74 years presenting with a new episode of depression , who did not have any medical contraindications to antidepressant medication and who had no history of psychosis or alcohol/substance abuse . Patients were interviewed to ascertain their suitability for the study . Eligible participants ( with a primary diagnosis of depression according to ICD10 criteria and a Beck Depression Inventory ( BDI ) score > 14 ) were r and omised to receive one of two antidepressant treatments , either the SSRI Citalopram or the NaRI Reboxetine , stratified according to severity . The final number r and omised to the trial was 601 . Follow-up assessment s took place at 2 , 6 and 12 weeks following r and omisation . Primary outcome was measured at 6 weeks by the BDI . Outcomes will be analysed on an intention-to-treat basis and will use multiple regression models to compare treatments . Discussion The results of the trial will provide information about targeting antidepressant treatment for individual patients ; in turn this may increase prescribing efficacy , thereby speeding recovery and reducing the cost to the NHS . It will also help to underst and the different roles that noradrenaline and serotonin might play in the biology of depression . The trial is expected to report in the autumn of 2008.Trial Registration IS RCT N BACKGROUND Antidepressants exhibit a variety of pharmacological actions including inhibition of the serotonin and noradrenaline transporters . We wished to investigate whether genetic variation could be used to target or personalise treatment , in a comparison of selective serotonin reuptake inhibitors ( SSRIs ) with noradrenaline reuptake inhibitors ( NARIs ) . AIMS To test the hypothesis that patients homozygous for the long ( insertion ) polymorphism of the serotonin transporter ( 5-HTTLPR ) have an increased response to SSRI antidepressants but not to NARI antidepressants . METHOD In an individually r and omised , parallel-group controlled trial , people meeting criteria for a depressive episode who were referred by their general practitioner were r and omised to receive either citalopram ( an SSRI ) or reboxetine ( an NARI ) . R and omisation was by means of a remote automated system accessed by telephone . The main outcome was depressive symptoms , measured by Beck Depression Inventory ( BDI ) total score 6 weeks after r and omisation . The trial was registered with the International St and ard R and omised Controlled Trials Number registry ( IS RCT N31345163 ) . RESULTS Altogether 298 participants were r and omised to receive citalopram and 303 were r and omised to reboxetine . At 6 weeks follow-up , complete data were available for 258 participants taking citalopram and 262 taking reboxetine . We found no evidence to support an influence of 5-HTTLPR on outcome following antidepressant treatment . The interaction term for BDI score at 6 weeks was 0.50 ( 95 % CI -2.04 to 3.03 , P = 0.70 ) , which indicated that responses to the SSRI and NARI were similar irrespective of 5-HTTLPR genotype . CONCLUSIONS It is unlikely that the 5-HTTLPR polymorphism alone will be clinical ly useful in predicting response to antidepressants in people with depression Amitriptyline , which is a noradrenaline reuptake and 5-HT reuptake inhibitor , has an established role in the management of  chronic tension-type headaches .  In a single-blind study , patients with chronic tension-type headache were r and omized to either fluoxetine 20 mg ( a selective 5-HT reuptake inhibitor ) or desipramine 75 mg ( a selective noradrenaline reuptake inhibitor ) and followed for 12 weeks to compare the effectiveness of the two drugs in improving headache , and to assess whether pain control is related to changes in depression . Patients were evaluated at weekly intervals on an analog pain-rating scale and at 4-weekly intervals on the Montgomery and Asberg Depression Rating Scale ( MADRS ) , the MOS general health status question naire ( SF36 ) , the Hospital Anxiety and Depression Scale ( HADS ) , and a side effects checklist .  Eighteen patients were r and omized to take fluoxetine and 19 to take desipramine . Of the 25 patients who completed the trial , 12 were on  fluoxetine and 13 were on desipramine . There was no significant difference between the two groups at baseline nor in change of pain ; reduction in use of analgesic medication ; nor change in the HADS , MADRS , or SF36 scores at 12 weeks , but 72 % of patients who completed the study improved , and this improvement almost exactly mirrored the improvement on the MADRS . The results from this trial are compatible with the notion that the beneficial effect of antidepressants in  chronic tension-type headache  is indirect , mediated by an effect on depression , and not more , dependent on serotonin reuptake inhibition than noradrenaline reuptake inhibition The objective of this study was to compare efficacy and tolerability of the selective noradrenalin reuptake inhibitor reboxetine with the selective serotonin reuptake inhibitor citalopram , in the treatment of major depressive disorder ( MDD ) . In total , 357 out patients with MDD were r and omized to treatment with reboxetine 8 - 10 mg or citalopram 20 - 40 mg per day during 24 weeks . Primary end-point was change from baseline in the Hamilton Depression Rating Scale ( HAM-D , 21 items ) . Sexual function/dysfunction was measured by the Sexual Function scale ( SF ) . Observed case analysis showed that both treatments yielded a gradual reduction of HAM-D scores : reboxetine with -21.4 and citalopram with -22.1 points ( NS ) . LOCF analysis showed a greater reduction of the HAM-D scores with citalopram compared with reboxetine ( -19.6 vs. -17.8 ; P = 0.034 ) . The response rate was 90.3 % for reboxetine and 92.7 % for citalopram ( NS ) . The most common side effect in the reboxetine group was dry mouth , and in the citalopram group sexual dysfunction . At week 24 , anorgasmia was reported by 5.9 % of the sexually active women in the reboxetine group vs 39 % in the citalopram group . The  dropout number  was 91 in the  reboxetine group , and 54 in the citalopram group . To summarize , both treatments gave a satisfactory antidepressant effect . The side effect profile differed between the groups , with a notably high prevalence of sexual dysfunctions in the citalopram group . The high number of dropouts in the reboxetine group , is considered as a result of the non-titration starting dose of 8 mg reboxetine per day , which gave a high incidence of early side-effects .  Depressive disorders including major depression ( MDD ) is very common , with a lifetime prevalence of at least 15 % in men and 25 % in women.1,2 Depression can be treated effectively by a range of antidepressant agents . Recent review s have suggested that the selective serotonin reuptake inhibitors ( SSRIs ) offer equal efficacy to the older antidepressant agents , such as tricyclic antidepressants , with the advantage of greater tolerability.3 - 5 Other review ers have reported that non-SSRI antidepressants , such as clomipramine , have been found to be significantly more effective than fluoxetine for the treatment of patients with severe depression.6  Reboxetine ( reboxetine mesylate , Edronax ; Pfizer , New York ) is a highly selective noradrenaline reuptake inhibitor , and the efficacy of reboxetine has been independently demonstrated in multiple r and omized , double-blind , placebo-controlled studies .7 - 9 In addition to improvements in depressive symptoms , treatment-associated improvements in social behavior ( measured using the Social Adaptation Self-evaluation Scale [SASS]),10 were noticed in one of these studies .8 In this study , reboxetine was statistically and clinical ly superior to both placebo and fluoxetine in improving social functioning . The primary objective of the current study was to assess efficacy and tolerability of reboxetine  in comparison with those of citalopram ( Cipramil ; H. Lundbeck , Copenhagen , Denmark ) in patients with MDD .  Citalopram is a highly SSRI . The antidepressant mechanism is presumed to be a result of stimulation of serotonergic neurotransmission in the central nervous system as a consequence of higher serotonin levels result ing from inhibition of the serotonin transporter . The therapeutic efficacy of citalopram in patients with MDD has been investigated in several placebo-controlled studies and in long-term and extension studies .11 The underlying rationale for this comparison was to study 2 different drug profiles , 1 drug being pure " adrenergic " and the other pure " serotonergic . " A secondary objective was to analyze the correlation between the types of depression ( ie , degree of melancholia and the efficacy of the 2 drugs ) Objective : To review the mechanism of selective serotonin reuptake inhibitor (SSRI)–mediated serotonergic neurotransmission , focusing on serotonin 1A ( 5-HT1A ) autoreceptors , which are proposed to be involved in delaying therapeutic efficacy . Vilazodone was specifically design ed to function both as an SSRI and a partial agonist at 5-HT1A receptors . This combined mechanism is proposed to decrease time to efficacy , minimize sexual side effects , and provide concomitant anxiolytic properties . Data Sources : A PubMed search of all English- language articles from January 1990 to January 2013 was conducted using the search terms depression and 5-HT1A , depression and buspirone , depression and pindolol , and vilazodone . Study Selection : We found 47 articles and abstract s that were selected for inclusion on the basis of information about the pharmacology of 5-HT1A receptors and the clinical data on pindolol , buspirone , and vilazodone in depression . Data Extraction : This review summarizes current literature involving antidepressant activity , the role of 5-HT1A autoreceptors , and clinical trials involving serotonin reuptake inhibition in conjunction with 5-HT1A agonists and partial agonists , with a focus on vilazodone . Results : Vilazodone has demonstrated efficacy in 2 large , r and omized , double-blind , placebo-controlled trials in major depressive disorder . Results suggest that vilazodone has a low incidence of sexual side effects and is effective in patients with high levels of anxiety . A pooled analysis shows evidence of significant symptom reduction after only 1 week of therapy . Conclusions : If future studies corroborate the clinical benefits attributed to its mechanism of action , vilazodone may show potential advantages in terms of onset of action , sexual side effects , and anxiolytic activity in patients with major depressive disorder & NA ; Sexual side‐effects due to antidepressant treatment are an important consideration when selecting a treatment regimen and can influence patient compliance . Sexual function during treatment with the selective noradrenaline reuptake inhibitor reboxetine , the selective serotonin reuptake inhibitor ( SSRI ) fluoxetine and placebo has been assessed in a multicentre , r and omized , 8‐week , double‐blind study of 450 patients diagnosed with major depressive disorder .  Sexual function was measured by the Rush Sexual Inventory completed by male and female patients and administered at baseline , week 4 and week 8 . The results indicate that reboxetine was similar to placebo and superior to fluoxetine in its effect on overall sexual function . There was a greater degree of sexual satisfaction in the reboxetine group compared to fluoxetine ( P = 0.02 ) . The percentage of female patients able to achieve orgasm increased during the study period for women who received reboxetine and placebo , but decreased for those who received fluoxetine . These results suggest that reboxetine may be of particular benefit for patients at risk for sexual dysfunction with SSRIs The antidepressant efficacy and tolerability of milnacipran , a dual action serotonin-noradrenaline reuptake inhibitor , were compared with those of the selective serotonin reuptake inhibitor , fluvoxamine , in 113 patients with moderate to severe major depression . Treatment with milnacipran , 50 mg b.d . for 6 weeks , produced a significantly greater reduction in Montgomery-Asberg Depression Rating Scale ( MADRS ) scores than fluvoxamine , 100 mg b.d . ( P = 0.007 ; 65.4 % versus 49.9 % , respectively ) ; significantly greater decreases were also seen on days 7 ( P = 0.04 ) and 28 ( P = 0.03 ) . The response rate ( the proportion of patients showing a decrease in MADRS scores of at least 50 % ) was 78.9 % in patients receiving milnacipran , compared with 60.7 % in fluvoxamine-treated patients ( P = 0.04 ) . Milnacipran also produced greater improvements in 24-item Hamilton Depression Rating Scale scores ( P = 0.05 ) . On the Clinical Global Impression Improvement scale , 77.2 % of milnacipran-treated patients were rated as considerably or markedly improved , compared with 60.7 % of patients receiving fluvoxamine ( P = 0.06 chi-squared ) . Both treatments were well tolerated ; the only significant difference between the two groups was a higher incidence of tremor and drowsiness in patients treated with fluvoxamine . It is concluded that milnacipran may offer some advantages over selective serotonin reuptake inhibitors , such as fluvoxamine , in the treatment of moderate to severe major depression After 1 mg DST , 25 major depressive patients ( DSM-III ) received at r and om either a specific inhibitor of noradrenaline reuptake ( Maprotiline ) or an inhibitor of serotinin reuptake ( Indalpine or Citalopram ) . After at least 3 weeks of treatment , no difference was found in treatment response between suppressors and non suppressors . This study is unable to confirm the usefulness of the DST in selection of treatment according to its central activity on serotonin or noradrenaline-reuptake BACKGROUND Antidepressant prescribing is widespread . Nonetheless , response to antidepressants is variable . If it was possible to predict response to medication and thus tailor treatment accordingly , this would not only improve patient outcomes but may also have economic benefits . AIMS To test the hypothesis that individuals with more severe depression would benefit more from noradrenaline reuptake inhibitors ( NARIs ) than selective serotonin reuptake inhibitors ( SSRIs ) compared with individuals with less severe depression . METHOD Individuals recruited from UK primary care who met ICD-10 criteria for a depressive episode and scored 15 or more on the Beck Depression Inventory ( BDI ) were r and  omised to either an SSRI ( citalopram 20 mg daily ) or a NARI ( reboxetine 4 mg twice daily ) . R and omisation was by means of a remote automated telephone system . The main outcome was depressive symptoms measured by the BDI total score 6 weeks after r and omisation . ( TRIAL REGISTRATION IS RCT N31345163 . ) RESULTS In total , 601 participants were r and omised  ( citalopram : n = 298 , reboxetine : n = 303 ) . Ninety-one per cent were followed up at 6 weeks ( citalopram : n = 274 , reboxetine : n = 272 ) . There was little evidence to support an interaction between treatment and severity of depression ( interaction term : 0.02 , 95 % CI -0.59 to 0.62 , P = 0.96 ) . Adjustment for potential confounders ( age , gender , employment status , history of depression , number of life events and social support ) did not affect the findings ( interaction term : 0.06 , 95 % CI -0.54 to 0.66 , P = 0.85 ) . CONCLUSIONS Treatment with NARIs does not confer any advantage over SSRI treatment for outcome in those with more severe depressive illness presenting in primary care Objective This r and omised , double-blind , 12-week study compared efficacy and tolerability of flexible-dose treatment with vortioxetine ( 10–20 mg/day ) versus agomelatine ( 25–50 mg/day ) in major depressive disorder patients with inadequate response to selective serotonin reuptake inhibitor (SSRI)/serotonin – noradrenaline reuptake inhibitor ( SNRI ) monotherapy . Methods Patients were switched directly from SSRI/SNRI to vortioxetine or agomelatine . Primary endpoint was change from baseline to week 8 in the Montgomery – Åsberg Depression Rating Scale ( MADRS ) total score analysed by mixed model for repeated measurements , using a noninferiority test followed by a superiority test . Secondary endpoints included response and remission rates , anxiety symptoms ( Hamilton Anxiety Rating Scale ) , Clinical Global Impression , overall functioning ( Sheehan Disability Scale ) , health-related quality of life ( EuroQol 5 Dimensions ) , productivity ( work limitation question naire ) and family functioning ( Depression and Family Functioning Scale ) . Results Primary endpoint noninferiority was established and vortioxetine ( n = 252 ) was superior to agomelatine ( n = 241 ) by 2.2 MADRS points ( p < 0.01 ) . Vortioxetine was also significantly superior in response and remission rates at weeks 8 and 12 ; MADRS , Hamilton Anxiety Rating Scale , Clinical Global Impression , Sheehan Disability Scale and EuroQol 5 Dimensions scores at week 4 onwards ; work limitation question naire at week 8 and Depression and Family Functioning Scale at weeks 8 and 12 . Fewer patients withdrew because of adverse events with vortioxetine ( 5.9 % vs 9.5 % ) . Adverse events ( incidence ≥5 % ) were nausea , headache , dizziness and somnolence . Conclusions Vortioxetine was noninferior and significantly superior to agomelatine in major depressive disorder patients with previous inadequate response to a single course of SSRI/SNRI monotherapy . Vortioxetine was safe and well tolerated BACKGROUND Whether the Brain Derived Neurotrophic Factor ( BDNF ) Val66Met polymorphism can predict antidepressant drug efficacy in depressed patients remains unclear , suggesting that it may depend on antidepressant classes . We assessed the impact of Val66Met polymorphism on antidepressant response and remission depending on antidepressant classes . METHODS In a 6-month prospect i ve , real-world setting , treatment study , 345 Caucasian depressed patients requiring a new or different drug treatment with a selective serotonin reuptake inhibitor ( SSRI ) , a serotonin and noradrenalin reuptake inhibitor ( SNRI ) or a tricyclic antidepressant ( TCA )  , were genotyped and assessed for response and remission . RESULTS 231 ( 67 % ) patients were homozygous for the Val66 allele ( Val/Val ) and 114 ( 33 % ) were carriers of Met allele ( Met ) . 152 ( 44.1 % ) patients were treated with SSRI , the others with SNRI/TCA . Both response and remission were explained by interactions between the Val66Met polymorphism and antidepressant drug classes ( multivariate models adjusted for propensity-scores : p=0.02 and p=0.03 respectively ) . With SSRI , Val/Val patients had a higher response rate 3 months post-treatment than Met patients ( 68.1 % versus 44 % ; adjusted-OR : 3.04 , IC95 % [ 1.05 ; 9.37 ] , p=0.04 ) . With SNRI/TCA , Val/Val patients had a lower remission rate 6 months post-treatment than Met patients ( 33.3 % versus 60.9 % , adjusted-OR : 0.27 , IC95 % [ 0.09 ; 0.76 ] , p=0.02 ) . LIMITATIONS Limited sample size . CONCLUSIONS This study argues for a personalized prescription of antidepressants in Caucasian patients with major depressive disorder , based on the BDNF Val66Met polymorphism : SSRI should be preferred for Val/Val patients and SNRI/TCA for Met patients . Further studies are required to confirm these data In this report , which is an up date of a guideline published in 2002 ( B and elow et al. 2002 , World J Biol Psychiatry 3:171 ) , recommendations for the pharmacological treatment of anxiety disorder , obsessive-compulsive disorder ( OCD ) and post-traumatic stress disorder ( PTSD ) are presented . Since the publication of the first version of this guideline , a substantial number of new r and omized controlled studies of anxiolytics have been published . In particular , more relapse prevention studies are now available that show sustained efficacy of anxiolytic drugs . The recommendations , developed by the World Federation of Societies of Biological Psychiatry ( WFSBP ) Task Force for the Pharmacological Treatment of Anxiety , Obsessive-Compulsive and Post-traumatic Stress Disorders , a consensus panel of 30 international experts , are now based on 510 published r and omized , placebo- or comparator-controlled clinical studies ( RCTs ) and 130 open studies and case reports . First-line treatments for these disorders are selective serotonin reuptake inhibitors ( SSRIs ) , serotonin-noradrenaline reuptake inhibitors ( SNRIs ) and the calcium channel modulator pregabalin . Tricyclic antidepressants ( TCAs ) are equally effective for some disorders , but many are less well tolerated than the SSRIs/SNRIs . In treatment-resistant cases , benzodiazepines may be used when the patient does not have a history of substance abuse disorders . Potential treatment options for patients unresponsive to st and ard treatments are described in this overview . Although these guidelines focus on medications , non-pharmacological were also considered . Cognitive behavioural therapy ( CBT ) and other variants of behaviour therapy have been sufficiently investigated in controlled studies in patients with anxiety disorders , OCD , and PTSD to support them being recommended either alone or in combination with the above medicines Rationale and objective Depression is a significant complication of stroke . The effectiveness of antidepressant drugs in the management of post-stroke depression ( PSD ) has been widely investigated . However , the choice of antidepressant drug is critically influenced by its safety and tolerability and by its effect on concurrent pathologies . Here we investigate the efficacy and safety of a selective serotonin reuptake inhibitor ( SSRI ) , citalopram , and a noradrenaline reuptake inhibitor ( NARI ) , reboxetine , in post-stroke patients affected by anxious depression or retarded depression . Methods This was a r and omized double-blind study . Seventy-four post-stroke depressed patients were diagnosed as affected by anxious or retarded depression by using a synoptic table . R and omisation was planned so that 50 % of the patients in each subgroup were assigned for 16 weeks to treatment with citalopram and the remaining 50 % were assigned to treatment with reboxetine . The Beck Depression Inventory ( BDI ) , the Hamilton Depression Rating Scale ( HDRS ) and a synoptic table were used to score depressive symptoms . Results Both citalopram and reboxetine showed good safety and tolerability . Citalopram exhibited greater efficacy in anxious depressed patients , while reboxetine was more effective in retarded depressed patients . Conclusions Citalopram or other SSRIs and reboxetine may be of first choice treatment in PSD because of their good efficacy and lack of severe side effects . In addition , PSD patients should be classified according to their clinical profile ( similarly to patients affected by primary depression ) for the selection of SSRIs or reboxetine as drugs of choice in particular subgroups of patients The efficacy and the tolerance of milnacipran ( 100 mg/day ) , a second generation antidepressant which equipotently inhibits both noradrenaline and serotonin reuptake , was compared to fluoxetine ( 20 mg/day ) , a selective serotonin reuptake inhibitor , in two parallel groups of , respectively , 97 and 93 major depressive out patients . The duration of the study was 6 weeks , with assessment s every 2 weeks by means of the Montgomery and Asberg depression scale ( MADRS ) , the Hamilton depression scale , the clinical global impressions ( CGI ) , and a checklist of symptoms and side-effects . Results showed significant superiority of fluoxetine over milnacipran on most rating instruments : MADRS ( P=0.01 ) including five individual items , Hamilton depression scale ( P=0.002 ) including ten individual items , CGI of severity ( P=0.01 ) and therapeutical index ( P=0.002 ) . On visual analogue scales assessing the clinical profile of the compounds , fluoxetine was rated as exhibiting more psychostimulating activity than milnacipran ( P=0.0008 ) . The tolerance of the two antidepressants was very similar , with the exception of symptoms of dizziness which were more frequently reported with milnacipran ( P=0.01 ) . These differences in efficacy favoring fluoxetine could result from the selection of a dose of milnacipran below the optimal therapeutic dose for this type of psychiatric patients or to the administration of the compounds in single daily intakes , whereas milnacipran possesses a plasma elimination half-life of only 7 Background Selective serotonin reuptake inhibitors ( SSRIs ) are popular medications for anxiety and depression , but their effectiveness , particularly in patients with prominent symptoms of loss of motivation and pleasure , has been question ed . There are few studies of the effect of SSRIs on neural reward mechanisms in humans . Methods We studied 45 healthy participants who were r and omly allocated to receive the SSRI citalopram , the noradrenaline reuptake inhibitor reboxetine , or placebo for 7 days in a double-blind , parallel group design . We used functional magnetic resonance imaging to measure the neural response to rewarding ( sight and /or flavor of chocolate ) and aversive stimuli ( sight of moldy strawberries and /or an unpleasant strawberry taste ) on the final day of drug treatment . Results Citalopram reduced activation to the chocolate stimuli in the ventral striatum and the ventral medial/orbitofrontal cortex . In contrast , reboxetine did not suppress ventral striatal activity and in fact increased neural responses within medial orbitofrontal cortex to reward . Citalopram also decreased neural responses to the aversive stimuli conditions in key “ punishment ” areas such as the lateral orbitofrontal cortex . Reboxetine produced a similar , although weaker effect . Conclusions Our findings are the first to show that treatment with SSRIs can diminish the neural processing of both rewarding and aversive stimuli . The ability of SSRIs to decrease neural responses to reward might underlie the question ed efficacy of SSRIs in depressive conditions characterized by decreased motivation and anhedonia and could also account for the experience of emotional blunting described by some patients during SSRI treatment BACKGROUND Inositol has been reported to be an effective treatment in depression , and we hypothesized that inositol addition might enhance or speed up response to  serotonin selective reuptake inhibitors ( SSRI ) . METHODS Twenty-seven depressed patients completed a double-blind controlled 4-week trial of SSRI plus placebo or SSRI plus inositol .  Hamilton Depression Rating Scale was used as an assessment tool at baseline , and 1 , 2 , 3 , and 4 weeks . RESULTS No significant difference was found between the two treatment groups . CONCLUSIONS Previous studies combining different effective antidepressant therapies similarly found no evidence for additive effects [ e.g. , monoamine oxidase inhibitors ( MAOI ) plus tricyclic antidepressants ( TCA ) , TCA plus lithium ] . By contrast , augmentation by lithium or MAOI after a failed course of antidepressant treatment is effective and should be studied with inositol INTRODUCTION : Reboxetine is the first available selective noradrenaline re-uptake inhibitor ( selective NRI ) . This paper gives an overview of its antidepressant efficacy and tolerability in eight r and omized double-blind , multicentre clinical trials . The clinical profile of reboxetine is also compared with that of the tricyclic antidepressants ( TCAs ) desipramine and imipramine and the selective serotonin re-uptake inhibitor ( SSRI ) fluoxetine . METHODS : Pooled data were analysed from seven short-term ( 4 - 8 weeks ) and one long-term ( up to 1 year ) trials comparing reboxetine with placebo , imipramine , desipramine or fluoxetine . The tolerability of reboxetine was evaluated in 2613 patients with major depression or dysthymia . Data from 1959 patients with major depressive disorder were included to assess drug efficacy . Efficacy was principally assessed using the Hamilton Depression Rating Scale ( HAM-D ) . RESULTS : Reboxetine was more effective than placebo in three of four short-term trials , and it was as effective as fluoxetine , imipramine and desipramine . In long-term treatment , reboxetine was more effective than placebo in preventing relapse ( S 50 % increase in HAM-D ) and recurrence ( HAM-D total score h 10 ) . In a subset of severely depressed patients , reboxetine was as effective as imipramine and significantly more effective than fluoxetine . Reboxetine was as effective as imipramine in the elderly , but better tolerated . The most common adverse events among the 1503 patients ( adults and elderly ) who received reboxetine were dry mouth ( 22 % ) , constipation ( 15 % ) , sweating ( 12 % ) and insomnia ( 11 % ) . Overall , reboxetine was well tolerated , as well as the SSRI fluoxetine and better than the TCAs imipramine and desipramine . CONCLUSIONS : Reboxetine is effective and well tolerated in the short and long-term treatment of depression . It is as well tolerated as fluoxetine and better than imipramine and desipramine . ( Int J Psych Clin Pract 2000 ; 4 : 201 - 208 The outcome of antidepressant therapy in terms of social functioning was evaluated in a r and omized , placebo-controlled , double-blind study comparing the selective noradrenaline reuptake inhibitor ( NARI ) , reboxetine , with the selective serotonin reuptake inhibitor ( SSRI ) fluoxetine . Of the 381 patients with major depression participating in the study , 302 patients were assessed using the new self-rating Social Adaptation Self-evaluation Scale ( SASS ) . Mean SASS total score at last assessment was superior ( p < 0.05 ) to placebo for both reboxetine and fluoxetine . Moreover , reboxetine was superior ( p < 0.05 ) to fluoxetine . Evaluation of the sensitivity to change in individual items by point-biserial correlation analysis showed a significant correlation between improvement in item score and reboxetine treatment in all but one item for the reboxetine-placebo comparison . In the fluoxetine-placebo comparison , a significant correlation was evident for only 12 of the 21 items . Direct comparison of reboxetine with fluoxetine revealed a significant correlation between change in item score and treatment for nine items , in favour of reboxetine . The association was maximal for six items , mainly related to negative self-perception and to active social behaviour . In the subset of patients in remission at last assessment ( n = 91 ) , the mean SASS total score for reboxetine was superior to that of both fluoxetine and placebo ( p < 0.05 ) . Point-biserial correlation analysis revealed that most items sensitive to change under active treatment in the total population did so with reboxetine ( 17 items ) or fluoxetine ( nine items ) in patients in remission . In the reboxetine-fluoxetine comparison , 14 items showed a significant association with reboxetine treatment . In conclusion , while social motivation and behaviour in depression are significantly affected by both noradrenergic and serotonergic antidepressant treatment , noradrenergic therapy seems particularly effective in improving negative self-perception and motivation towards action , result ing in a better quality of remission in terms of social functioning
Evidence from meta- analysis of r and omised controlled trials ( RCTs ) and r and omised pragmatic trials was found in support of greater efficacy of the serotonin noradrenaline reuptake inhibitors ( SNRIs ) , venlafaxine and duloxetine , in moderate to severe depression compared to SSRIs but no evidence was found for superiority of milnacipran .
There is sufficient current evidence that demonstrates an increase in efficacy , when noradrenaline reuptake is added to serotonin ( 5-HT ) reuptake , to suggest that patients with severe depression or those who have failed to reach remission with a SSRI may benefit from treatment with a SNRI .
Selective serotonin reuptake inhibitors ( SSRIs ) are recommended as first-line pharmacological treatment for depression and are the most commonly prescribed class of antidepressants .
However , there is substantial evidence that noradrenaline has a role in the pathogenesis and treatment of depression .
This review aims to examine the evidence of including noradrenaline reuptake inhibition with serotonin reuptake inhibition with respect to increasing efficacy in the treatment of depression .