Rob Kok

ORCID: 0000-0002-9856-6920
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About
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Research Areas
  • Electroconvulsive Therapy Studies
  • Treatment of Major Depression
  • Metabolism and Genetic Disorders
  • Dementia and Cognitive Impairment Research
  • Bipolar Disorder and Treatment
  • Folate and B Vitamins Research
  • Schizophrenia research and treatment
  • Health disparities and outcomes
  • Health Systems, Economic Evaluations, Quality of Life
  • Frailty in Older Adults
  • Epigenetics and DNA Methylation
  • Mental Health Research Topics
  • Cardiac Health and Mental Health
  • Substance Abuse Treatment and Outcomes
  • Peroxisome Proliferator-Activated Receptors
  • Aging and Gerontology Research
  • Amino Acid Enzymes and Metabolism
  • Mental Health Treatment and Access
  • Health and Well-being Studies
  • Takotsubo Cardiomyopathy and Associated Phenomena
  • Alcoholism and Thiamine Deficiency
  • Transcranial Magnetic Stimulation Studies
  • Analytical Chemistry and Chromatography
  • RNA modifications and cancer
  • Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes

Parnassia Groep
2016-2025

White Plains Hospital
2024

Universidade de Santiago de Compostela
2023

University of Groningen
2009-2020

University Medical Center Groningen
2009-2020

Slotervaartziekenhuis
2018

Uitvoeringsinstituut Werknemersverzekeringen
2018

GGD Rotterdam-Rijnmond
2016-2017

University of Pittsburgh
2017

University of Amsterdam
1987-2016

To study late-life depression and its unfavourable course co morbidities in The Netherlands.We designed the Netherlands Study of Depression Older Persons (NESDO), a multi-site naturalistic prospective cohort which makes it possible to examine determinants, consequences depressive disorders older persons over period six years, compare these with those earlier adulthood.From 2007 until 2010, NESDO consortium has recruited 510 depressed non (≥ 60 years) at 5 locations throughout Netherlands....

10.1186/1756-0500-4-524 article EN cc-by BMC Research Notes 2011-12-01

Severe depression can be a life-threatening disorder, especially in elderly patients. A fast-acting treatment is crucial for this group. Electroconvulsive therapy (ECT) may work faster than medication.To compare the speed of remission using ECT v. medication in-patients.The in-patients with DSM-IV diagnosis major (baseline MADRS score ≥20) was compared between 47 participants (mean age 74.0 years, s.d. = 7.4) from an randomised controlled trial (RCT) and 81 72.2 7.6) RCT (nortriptyline...

10.1192/bjp.bp.114.148213 article EN The British Journal of Psychiatry 2014-10-17

We aimed to examine the course of depression during 2-year follow-up in a group clinically depressed older persons. Subsequently, we studied which socio-demographic and clinical characteristics predict diagnoses at follow-up.Data were used from Netherlands Study Depression Older persons (NESDO; N = 510). Diagnoses DSM-IV-TR criteria available 285 patients baseline follow-up. Severity depressive symptoms, as assessed with Inventory Depressive Symptoms (IDS), was obtained 6-monthly postal...

10.1186/s12888-015-0401-5 article EN cc-by BMC Psychiatry 2015-02-10

The relationship between peroxisomal and mitochondrial oxidation of the methyl branched fatty acids, phytanic acid pristanic acid, was studied in normal mutant human skin fibroblasts with established enzyme deficiencies. Tandem mass spectrometry used for analysis acylcarnitine intermediates. In cells, 4,8-dimethylnonanoylcarnitine (C11:0) 2,6-dimethylheptanoylcarnitine (C9:0) accumulated after incubation either or acid. These intermediates were not observed when peroxisome-deficient cells...

10.1016/s0022-2275(20)34204-8 article EN cc-by Journal of Lipid Research 1998-01-01

Reduced hippocampal volume and increased prevalence of subcortical white matter lesions are associated with both recurrent early onset depression (EOD) late (LOD). It is not clear whether these two factors differentially affect the age first depression. Therefore, we wished to investigate relationship between volume, adjustment for lesions.MRI brain scans were used compare volumes matched female patients (>60 years) EOD LOD healthy controls.When comparing three groups adjusting age,...

10.1136/jnnp.2006.098087 article EN Journal of Neurology Neurosurgery & Psychiatry 2007-01-09

Risk of neural tube defects (NTDs) is determined by genetic and environmental factors, among which folate status appears to play a key role. However, the precise nature link between low NTDs poorly understood, it remains unclear how folic acid prevents NTDs. We investigated effect level on risk in splotch (Sp(2)(H)) mice, carry mutation Pax3. Dietary restriction results reduced maternal blood folate, elevated plasma homocysteine embryonic content. Folate deficiency does not cause wild-type...

10.1093/hmg/ddn262 article EN Human Molecular Genetics 2008-08-21

Depression later in life may have a more somatic presentation compared with depression earlier due to chronic disease and increasing age. This study examines the influence of presence diseases age on symptom dimensions late-life depression.Baseline data 429 depressed non-depressed older persons (aged 60-93 years) Netherlands Study Old Age were used, including dimension scores as assessed mood, motivation subscales Inventory Depressive Symptomatology-Self Report (IDS-SR). Linear regression...

10.1016/j.jad.2014.08.032 article EN publisher-specific-oa Journal of Affective Disorders 2014-08-30

Objective In the Netherlands, persons of Turkish, Moroccan and Surinamese descent form largest groups non‐western immigrants. A high prevalence mild cognitive impairment (MCI) dementia has been described in immigrant populations United States America Kingdom. We determined MCI older community‐dwelling adults from Netherlands. Methods Participants, aged 55 years older, (Arabic or Berber), (Creole Hindustani) Dutch were recruited via their general practitioners. Cognitive deficits assessed...

10.1002/gps.4417 article EN International Journal of Geriatric Psychiatry 2016-01-21

Schizophrenia is highly heritable, yet its underlying pathophysiology remains largely unknown. Among the most well-replicated findings in neurobiological studies of schizophrenia are deficits myelination and white matter integrity; however, direct etiological genetic cellular evidence has thus far been lacking. Here, we implement a family-based approach for discovery combined with functional analysis using induced pluripotent stem cells (iPSCs). We observed familial segregation two rare...

10.1038/s41380-017-0004-2 article EN cc-by Molecular Psychiatry 2018-01-04

Article Abstract Objective: To compare the efficacy and cognitive side effects of high-dose unilateral brief pulse electroconvulsive therapy (ECT) with those ultrabrief ECT in treatment major depression. Method: From April 2007 until March 2011, we conducted a prospective, double-blind, randomized multicenter trial 3 tertiary psychiatric hospitals. All patients depressive disorder according to DSM-IV criteria were eligible. Depression severity was assessed Montgomery-Asberg Rating Scale;...

10.4088/jcp.13m08538 article EN The Journal of Clinical Psychiatry 2013-11-15

ABSTRACT Background: Late-life depression is a heterogeneous disorder, whereby cognitive impairments are often observed. This study examines which clinical characteristics and symptom dimensions of late-life especially impacting on specific domains. Methods: Cross-sectional data 378 depressed 132 non-depressed older adults between 60–93 years, from the Netherlands Study Depression in Older (NESDO) were used. Depressed recruited both inpatient outpatient mental healthcare institutes general...

10.1017/s1041610214000155 article EN cc-by-nc-nd International Psychogeriatrics 2014-02-24
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