Johannes Thome

University of Rostock, Rostock, Mecklenburg-Vorpommern, Germany

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Publications (217)748.27 Total impact

  • Y Groen · N A Börger · J Koerts · J Thome · O Tucha ·
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    ABSTRACT: Spontaneous eye blink rate is modulated by task demands and internal state, and is demonstrated to reflect central dopamine activity. Also, spontaneous eye blinks are strategically timed around salient stimuli. This study investigates whether children with attention deficit hyperactivity disorder (ADHD) show reduced blink rates, blink modulation and blink timing, and whether this is influenced by stimulant medication. The electrooculogram was measured in 18 typically developing children, 16 children with ADHD off methylphenidate (Mph), and 16 children with ADHD on Mph during a rest period and during performance of a 60-min visual selective attention task. Blink rate and timing was extracted from the electrooculogram. No evidence was found for aberrant blink rate or blink modulation in children with ADHD off Mph. All groups increased blink rates from rest to task, and no group differences were found in blink rate during rest and task, or in the modulation of blink rate from rest to task. Time-on task resulted in a similar increase in blink rates in all three groups. Stimulant medication appeared not to influence blink rate and blink modulation, except that in the ADHD off Mph group the blink rate was enhanced only under conditions with performance feedback. All groups inhibited blinks before stimulus presentation and strategically timed their blinks after the stimulus. Children with ADHD off Mph showed reduced blink inhibition before the stimulus; however, given the low incidence (<1 % of the trials) and long latency this is not likely to impair their visual intake.
    Journal of Neural Transmission 10/2015; DOI:10.1007/s00702-015-1457-6 · 2.40 Impact Factor
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    ABSTRACT: A more recent branch of research describes the importance of sleep problems in the development and treatment of mental disorders in children and adolescents, such as attention-deficit hyperactivity disorder (ADHD) and mood disorders (MD). Research about clock genes has continued since 2012 with a focus on metabolic processes within all parts of the mammalian body, but particularly within different cerebral regions. Research has focused on complex regulatory circuits involving clock genes themselves and their influence on circadian rhythms of diverse body functions. Current publications on basic research in human and animal models indicate directions for the treatment of mental disorders targeting circadian rhythms and mechanisms. The most significant lines of research are described in this paper.
    Journal of Neural Transmission 10/2015; DOI:10.1007/s00702-015-1455-8 · 2.40 Impact Factor
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    ABSTRACT: Adults with attention deficit hyperactivity disorder (ADHD) suffer from various impairments of cognitive, emotional and social functioning, which can have considerable consequences for many areas of daily living. One of those areas is driving a vehicle. Driving is an important activity of everyday life and requires an efficient interplay between multiple cognitive, perceptual, and motor skills. In the present study, a selective review of the literature on driving-related difficulties associated with ADHD is performed, seeking to answer whether individuals with ADHD show increased levels of unsafe driving behaviours, which cognitive (dys)functions of individuals with ADHD are related to driving difficulty, and whether pharmacological treatment significantly improves the driving behaviour of individuals with ADHD. The available research provides convincing evidence that individuals with ADHD have different and more adverse driving outcomes than individuals without the condition. However, it appears that not all individuals with ADHD are affected uniformly. Despite various cognitive functions being related with driving difficulties, these functions do not appear helpful in detecting high risk drivers with ADHD, nor in predicting driving outcomes in individuals with ADHD, since impairments in these functions are defining criteria for the diagnoses of ADHD (e.g., inattention and impulsivity). Pharmacological treatment of ADHD, in particular stimulant drug treatment, appears to be beneficial to the driving difficulties experienced by individuals with ADHD. However, additional research is needed, in particular further studies that address the numerous methodological weaknesses of many of the previous studies.
    Journal of Neural Transmission 09/2015; DOI:10.1007/s00702-015-1465-6 · 2.40 Impact Factor
  • S Cohrs · D Pülschen · M Goerke · J Thome · R Schlack ·

    Pharmacopsychiatry; 09/2015
  • P Koo · C Berger · J Bartz · P Wybitul · J Thome · J Hoeppner ·

    Pharmacopsychiatry 09/2015; 48(06). DOI:10.1055/s-0035-1557985 · 1.85 Impact Factor
  • J Bartz · C Berger · J Thome · J Höppner ·

    Pharmacopsychiatry 09/2015; 48(06). DOI:10.1055/s-0035-1557943 · 1.85 Impact Factor

  • Pharmacopsychiatry 09/2015; 48(06). DOI:10.1055/s-0035-1557997 · 1.85 Impact Factor

  • Pharmacopsychiatry; 09/2015
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    ABSTRACT: The purpose of the study was to study the associations of tobacco, alcohol, marijuana, and coffee use and insomnia complaints (IC) in adolescents with special consideration of the influence of coffee consumption on these relationships. 7698 Subjects aged 11-17 years were investigated in a cross-sectional study within the German Health Interview and Examination Survey for Children and Adolescents. Self-report questionnaires were distributed to the participants. Hierarchical regression analyses were performed to assess possible effects of coffee consumption on the association of tobacco, alcohol, and marijuana use with IC. Common risk factors for insomnia were included in the adjusted analyses. Tobacco, alcohol, marijuana and coffee use displayed significant bivariate associations with IC. After adjusting the first three substances for coffee consumption, their associations with IC were reduced considerably. After additionally adjusting for other potential confounders (age, gender, socio-economic status, externalizing and internalizing psychiatric problems, media use, bodyweight, medical condition), frequent coffee consumption, high alcohol intake and frequent smoking contributed to the prediction of IC in male subjects while frequent coffee consumption and high alcohol intake predicted the occurrence of IC in females. Coffee consumption could be an important risk factor for IC in adolescents and it significantly affects the association of smoking, alcohol, and marijuana with IC. Future research that includes long-term studies about psychoactive substance use (PSU) and sleep should also consider coffee consumption. Parents, educators, clinicians, and researchers should be aware of the potentially hazardous influence of PSU, especially coffee, alcohol and tobacco, on sleep in young individuals.
    Journal of Neural Transmission 08/2015; DOI:10.1007/s00702-015-1448-7 · 2.40 Impact Factor
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    ABSTRACT: Electroencephalography (EEG) has been widely used in the neurophysiological investigation of major depressive disorder (MDD) during past decades. An approach that has attracted particular interest over the past 20 years is current source density (CSD) that assesses current source in extracellular spaces, which are the local generators of the field potentials caused by the activation of neurones. Our aim was to review the current literature regarding resting state CSD analysis in MDD patients. To date, the most prominent aspects in such studies comprise the identification of clinical endophenotypes on the basis of resting state CSD, and the investigation of CSD with respect to treatment outcome prediction. Increased alpha band resting state CSD in frontal regions is typical for MDD, while increased theta band activity in the rostral anterior cingulate gyrus (rACC) has been found to be a good predictor of better antidepressant response. However, differences in the methods used in different studies could be responsible for some contradictions in reported findings. Further research is needed for better distinction of depressive patients from patients with other psychiatric disorders, as well as from healthy subjects.
    Journal of Neural Transmission 08/2015; DOI:10.1007/s00702-015-1432-2 · 2.40 Impact Factor
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    ABSTRACT: Neuropsychological research on adults with ADHD showed deficits in various aspects of attention. However, the majority of studies failed to explore the change of performance over time, so-called time-on-task effects. As a consequence, little is known about sustained attention performance of adults with ADHD. The aim of the present study was therefore to test the hypothesis of sustained attention deficits of adults with ADHD. Twenty-nine adults with ADHD and 30 healthy individuals were assessed on four 20-min tests of sustained attention, measuring alertness, selective attention, divided attention and flexibility. The deterioration of performance over time (time-on-task effects) was compared between patients with ADHD and healthy individuals to conclude on sustained attention performance. Compared to healthy individuals, patients with ADHD showed significant deficits of medium size in selective attention and divided attention. Furthermore, medium sustained attention deficits was observed in measures of alertness, selective attention and divided attention. This study supports the notion of sustained attention deficits of adults with ADHD.
    Journal of Neural Transmission 07/2015; DOI:10.1007/s00702-015-1426-0 · 2.40 Impact Factor
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    ABSTRACT: Circadian rhythms are recurring patterns in a host of physiological and other parameters that recur with periods of near 24 h. These rhythms reflect the temporal organization of an organism's homeostatic control systems and as such are key processes in ensuring optimal physiological performance. Dysfunction of circadian processes is linked with adverse health conditions. In this review we highlight the evidence that normal, healthy aging is associated with changes in the circadian system; we examine the molecular mechanisms through which such changes may arise, discuss whether more robust circadian function is a predictor of longevity and highlight the role of circadian rhythms in age-related diseases. Overall, the literature shows that aging is associated with marked changes in circadian processes, both at the behavioral and molecular levels, and the molecular mechanisms through which such changes arise remain to be elucidated, but may involve inflammatory process, redox homeostasis and epigenetic modifications. Understanding the nature of age-related circadian dysfunction will allow for the design of chronotherapeutic intervention strategies to attenuate circadian dysfunction and thus improve health and quality of life.
    Journal of Neural Transmission 07/2015; DOI:10.1007/s00702-015-1424-2 · 2.40 Impact Factor
  • Johannes Thome ·

    Journal of Neural Transmission 06/2015; 122 Suppl 1. DOI:10.1007/s00702-015-1415-3 · 2.40 Impact Factor
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    ABSTRACT: In recent years, there is an increasing awareness that individuals may purposely feign or exaggerate symptoms of attention deficit hyperactivity disorder (ADHD) to gain external incentives, including access to stimulant drugs or special academic accommodations. There are vast consequences of undetected feigned ADHD such as substantial costs covered by society for unnecessary assessments and treatments, unjustified occupation of limited medical resources and undermining society's trust in the existence of the disorder or the effectiveness of treatment. In times of economic crisis and cost savings in the medical sector, the detection of feigned ADHD is of importance. This review briefly describes the research on this topic with an emphasis on the approaches available for detection of feigned ADHD (i.e., self-report questionnaires, personality inventories, cognitive tests used in routine neuropsychological assessment and tests specifically designed for detecting feigned cognitive dysfunction). Promising approaches and measures are available for identifying feigned ADHD but there is an immediate need for further research.
    Journal of Neural Transmission 08/2014; 122 Suppl 1. DOI:10.1007/s00702-014-1274-3 · 2.40 Impact Factor
  • Karolina Furczyk · Johannes Thome ·
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    ABSTRACT: While suicidal behaviour has been implicated in a plethora of psychiatric disorders including depression, psychoses and substance abuse, its association with adult ADHD is largely under-researched. Given that emotional instability and the high prevalence of comorbid conditions such as mood disorders and alcohol/drug dependence are typical for ADHD, the question of suicide risk must not be neglected in this patient group. A review of the current literature focusing on this issue provides strong evidence that ADHD patients are at a significant risk for experiencing suicidal ideations and committing suicide. For daily clinical practice, it is therefore essential to incorporate this aspect into the diagnostic and therapeutic process and to take preventive measures.
    ADHD Attention Deficit and Hyperactivity Disorders 07/2014; 6(3). DOI:10.1007/s12402-014-0150-1
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    ABSTRACT: Autism spectrum disorder (ASD) diagnosis is increasing, with 1/88 children believed to be affected by the disorder, with a most recent survey suggesting numbers as high as 1/50. Treatment and understanding of ASD causes is a pressing health concern. ASD protein biomarkers may provide clues about ASD cause. Protein biomarkers for ASDs could be used for ASD diagnosis, subtyping, treatment monitoring and identifying therapeutic targets. Here we analyzed the sera from 7 children with ASD and 7 matched controls using Tricine gel electrophoresis (Tricine-PAGE) and liquid chromatography-tandem mass spectrometry (LC-MS/MS). Overall, we found increased levels of apolipoproteins (Apos) ApoA1 and ApoA4, involved in cholesterol metabolism and of serum paraoxanase/arylesterase 1 (PON1), involved in preventing oxidative damage, in the sera of children with ASD, compared with their matched controls. All three proteins are predicted to interact with each other and are parts of High Density Lipoproteins (HDLs). Further studies are needed to validate these findings in larger subject numbers.This article is protected by copyright. All rights reserved
    Electrophoresis 07/2014; 35(14). DOI:10.1002/elps.201300370 · 3.03 Impact Factor
  • Frank Häβler · Johannes Thome · Olaf Reis ·
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    ABSTRACT: People with intellectual disabilities often suffer from mental disorders or display challenging behavior. For both impairments, treatment with more than one psychopharmacological drug is common, although little is known about efficacy and side effects of polypharmacological treatment. The paper reviews studies on treatment of people with intellectual disability (ID) with more than one psychoactive drug. Many studies rely on poor evidence and are supplemented with data from our own research. Risks and benefits of different combinations containing neuroleptics are listed. Ethical considerations for the use of different drugs combined are discussed. The use of combinations of neuroleptics on people with ID should be carried out with great care, since side effects may be amplified in people with ID, depending on the combination.
    Journal of Neural Transmission 05/2014; 122(S1). DOI:10.1007/s00702-014-1219-x · 2.40 Impact Factor
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    Johannes Thome ·
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    ABSTRACT: Modern molecular psychiatry benefits immensely from the scientific and technological advances of general neuroscience (including genetics, epigenetics, and proteomics). This "progress" of molecular psychiatry, however, will be to a degree "unbalanced" and "epiphytic" should the development of the corresponding theoretical frameworks and conceptualization tools that allow contextualization of the individual neuroscientific findings within the specific perspective of mental health care issues be neglected. The General Psychopathology, published by Karl Jaspers in 1913, is considered a groundbreaking work in psychiatric literature, having established psychopathology as a space of critical methodological self-reflection, and delineating a scientific methodology specific to psychiatry. With the advance of neurobiology and molecular neuroscience and its adoption in psychiatric research, however, a growing alienation between current research-oriented neuropsychiatry and the classical psychopathological literature is evident. Further, consensus-based international classification criteria, although useful for providing an internationally accepted system of reliable psychiatric diagnostic categories, further contribute to a neglect of genuinely autonomous thought on psychopathology. Nevertheless, many of the unsolved theoretical problems of psychiatry, including those in the areas of nosology, anthropology, ethics, epistemology and methodology, might be fruitfully addressed by a re-examination of classic texts, such as Jaspers's General Psychopathology, and their further development and adaptation for 21st century psychiatry.
    05/2014; 2(1):3. DOI:10.1186/2049-9256-2-3
  • J. Thome · A. Bratek · K. Krysta ·
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    ABSTRACT: The identification of peripheral biomarkers for schizophrenia is of great clinical importance, with the potential to considerably improve its diagnosis, treatment and prognosis. However, despite intense research efforts and the discovery of several potential candidates for markers, no biomarker assay developed so far possesses sufficient sensitivity and specificity for clinical use. Nevertheless, with the advent of innovative technologies and methods on an analytical and statistical level, including hypothesis-free proteomic and epigenetic procedures and advanced bioinformatics, establishing biomarkers for clinical use may lay within reach. To date, the most promising candidates for biomarkers are linked to neural transmission, neural plasticity (e.g. neurotrophic factors), oxidative stress/free radicals, endocrinology, immunology, signalling pathways, gene expression regulation/activation and lipidomics.
    05/2014; 29:16-16. DOI:10.1159/10.1159/000362429
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    ABSTRACT: Schizophrenia is a severe mental illness with a biological basis. However, the search for reliable biomarkers suitable for clinical routine has been futile so far. Accordingly, there is a need for innovative approaches such as genomics and proteomics to achieve this goal. In the present study, we compared metabolomic and proteomic data from 26 schizophrenia patients as well as from unaffected controls carefully matched for age and gender in a multi-platform approach. The combined analysis identified many signatures with initially good biomarker characteristics. After statistical analysis and comparison of these identified serum metabolites (analysed by Gas Chromatography Mass Spectrometry) and hydrophobic serum proteins (analysed by matrix-assisted laser desorption ionisation mass spectrometry), several markers (e.g., 2-piperidinec carboxylic acid, 6-deoxy-mannofuranose, galactoseoxime and a serum peptide of m/z 3177) were determined as having the best discriminating value between the groups. Our findings represent a proof of principle indicating that metabolomic and proteomic approaches can be successfully used in psychiatric biomarker research, even though the results should be regarded as preliminary with a need for replication in larger samples.
    Journal of Neural Transmission 05/2014; 122(S1). DOI:10.1007/s00702-014-1224-0 · 2.40 Impact Factor

Publication Stats

6k Citations
748.27 Total Impact Points


  • 2011-2014
    • University of Rostock
      • Klinik und Poliklinik für Psychiatrie und Psychotherapie
      Rostock, Mecklenburg-Vorpommern, Germany
  • 2004-2012
    • Swansea University
      • • Department of Psychology
      • • Institute of Life Science "ILS"
      Swansea, Wales, United Kingdom
    • Universität Heidelberg
      Heidelburg, Baden-Württemberg, Germany
  • 2004-2009
    • University of Wales
      Cardiff, Wales, United Kingdom
  • 2000-2004
    • Central Institute of Mental Health
      • Biochemical Laboratory
      Mannheim, Baden-Württemberg, Germany
  • 1999-2003
    • Yale University
      • Department of Psychiatry
      New Haven, Connecticut, United States
    • Yale-New Haven Hospital
      New Haven, Connecticut, United States
  • 1994-2001
    • University of Wuerzburg
      • • Division of Forensic Psychiatry
      • • Department of Psychiatry, Psychosomatics, and Psychotherapy
      Würzburg, Bavaria, Germany