Publications by authors named "Willem A Nolen"

Background: Shared decision-making (SDM) is of increasing importance in mental health care, however, large studies on the effects of SDM in bipolar disorder (BD) are scarce.

Aim: To gain insight into the relationships between SDM, guideline concordance of treatments in everyday practice, satisfaction with care, and medication adherence in BD.

Method: In a nationwide observational study on the treatment of BD, patients were asked questions about their involvement in treatment.

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Objectives: The authors compared the switch rate into hypomania/mania in depressed patients treated with second-generation antidepressants who had either bipolar I or bipolar II disorder.

Methods: In a 10-week trial, 184 outpatients with bipolar depression (134 with bipolar I disorder, 48 with bipolar II disorder, two with bipolar disorder not otherwise specified) were treated with one of three antidepressants as an adjunct to mood stabilizers. The patients' switch rates were assessed.

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Psychotic depression is a severe and difficult-to-treat subtype of major depressive disorder for which higher rates of treatment-resistant depression were found. Studies have been performed aiming to predict treatment-resistant depression or treatment nonresponse. However, most of these studies excluded patients with psychotic depression.

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Background: Since insomnia and depression are interrelated, improved sleep early in antidepressant pharmacotherapy may predict a positive treatment outcome. We investigated whether early insomnia improvement (EII) predicted treatment outcome in psychotic depression (PD) and examined if there was an interaction effect between EII and treatment type to assess if findings were treatment-specific.

Methods: This study is a secondary analysis of a randomized trial comparing 7 weeks treatment with the antidepressants venlafaxine, imipramine and venlafaxine plus the antipsychotic quetiapine in PD ( n = 114).

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Background: Lithium has long been considered the gold-standard pharmacological treatment for the maintenance treatment of bipolar disorders (BD) which is supported by a wide body of evidence. Prior research has shown a steady decline in lithium prescriptions during the last two decades. We aim to identify potential factors explaining this decline across the world with an anonymous worldwide survey developed by the International Society for Bipolar Disorders (ISBD) Task Force "Role of Lithium in Bipolar Disorders" and distributed by diverse academic and professional international channels.

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Objective: Bipolar patients in the United States (US) compared to those from the Netherlands and Germany (here abbrev. as "Europe") have more Axis I comorbidities and more poor prognosis factors such as early onset and psychosocial adversity in childhood. We wished to examine whether these differences also extended to Axis II personality disorders (PDs).

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Background: Evidence is limited regarding the most effective pharmacological treatment for psychotic depression: monotherapy with an antidepressant, monotherapy with an antipsychotic, another treatment (e.g. mifepristone), or combination of an antidepressant plus an antipsychotic.

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Background: Depending on the classification system used, 5-40% of manic subjects present with concomitant depressive symptoms. This post-hoc analysis evaluates the hypothesis that (hypo)manic subjects have a higher burden of depression than non-(hypo)manic subjects.

Methods: Data from 806 Bipolar I or II participants of the Stanley Foundation Bipolar Network (SFBN) were analyzed, comprising 17,937 visits.

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Article Synopsis
  • The study aims to examine how pregnancy affects the course of bipolar disorder (BD) by comparing daily mood scores using a method called Lifechart Method (LCM) in pregnant and non-pregnant women.
  • The research analyzed two groups: 34 pregnant women and 52 non-pregnant women, focusing on aspects like the frequency of symptomatic days, severity of symptoms, and patterns in mood fluctuations.
  • Results suggested there were no significant differences in overall BD course between the two groups, but more pregnant women were classified as moderately ill, and their daily mood variation was less compared to non-pregnant women.
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Background: Low-grade inflammation occurs in a subgroup of patients with Major Depressive Disorder (MDD) and may be associated with response to antidepressant medications. The Neutrophil to Lymphocyte Ratio (NLR) and total White Blood cell Count (WBC) are markers of systemic inflammation which have not been investigated as predictors for outcome to pharmacotherapy in unipolar depression yet. Moreover, the association between inflammation and treatment response has not been studied in unipolar Psychotic Depression (PD).

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Background: Hypoandrogenic men showed a higher prevalence of major depressive disorder (MDD), which could be ascribed to overlapping symptoms such as sexual dysfunction, or additionally to core emotional symptoms such as sadness and anhedonia. We examined whether androgen levels 1) differ between men with and without MDD cross-sectionally, 2) are associated with an elevated risk for onset of MDD prospectively, and 3) associate with all individual MDD symptoms, or only with hypogonadism overlapping symptoms.

Methods: In 823 men (mean age 43.

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Background: The Stanley Foundation Bipolar Treatment Outcome Network (SFBN) recruited more than 900 outpatients from 1995 to 2002 from 4 sites in the United States (US) and 3 in the Netherlands and Germany (abbreviated as Europe). When funding was discontinued, the international group of investigators continued to work together as the Bipolar Collaborative Network (BCN), publishing so far 87 peer-reviewed manuscripts. On the 25th year anniversary of its founding, publication of a brief summary of some of the major findings appeared appropriate.

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Background: Only few studies investigated the relation between concordance with treatment guidelines and treatment outcome in everyday treatment of bipolar disorder (BD). Prospective studies are scarce.

Methods: A nationwide, naturalistic, prospective study on the relation between guideline concordance and treatment outcome in the long-term outpatient treatment of patients with BD.

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Major depressive disorder (MDD) has a higher prevalence in women with supraphysiologic androgen levels. Whether there is also an association between depression and androgen levels in the physiological range, is unknown. This study examined if women with current MDD have higher androgen levels compared to women who have never had MDD, and if androgen levels are associated with onset and remission of MDD.

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Article Synopsis
  • The study evaluated clinical practice guidelines for managing depression globally, focusing on their development and implementation quality.
  • It found that guidelines from low- and middle-income countries generally had less transparency, fewer multidisciplinary authors, and lower rates of systematic reviews compared to those from high-income countries.
  • The conclusion emphasizes the need for improved planning, reporting, and measurement of guideline effectiveness, especially in low- and middle-income countries, and recommends that future guidelines include strategies for implementation and assessment.
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Background: Psychomotor Retardation is a key symptom of Major Depressive Disorder. According to the literature its presence may affect the prognosis of treatment. Aim of the present study is to investigate the prognostic role of Psychomotor Retardation in patients with unipolar Psychotic Depression who are under antidepressant treatment.

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Background: Evidence is emerging that early onset bipolar disorder and the duration of the delay to first treatment are both risk factors for poor treatment outcome. We report on the incidence and implications of these two risk factors in patients from the United States (US) versus Europe.

Methods: Age of onset and age at first treatment for depression or mania was assessed in 967 outpatients with bipolar disorder who gave informed consent for participation and filling out a detailed questionnaire.

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Objective: According to DSM-IV, criterion (A) for diagnosing a hypomanic/manic episode is mood change (ie, elevated, expansive, or irritable mood). Criterion (A) was redefined in DSM-5, adding increased energy or activity in addition to mood change. We sought to investigate the effect of adding increased energy or activity to criterion (A) for the diagnosis of hypomania/mania and, thus, bipolar disorder.

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Aims: To systematically review the existing trials on optimal serum levels for lithium for maintenance treatment of bipolar disorder and to develop clinical recommendations.

Methods: Systematic literature search. Discussion of major characteristics, limitations, methodological quality, and results of selected trials.

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