1
|
Laraki Y, Bayard S, Decombe A, Capdevielle D, Raffard S. Preliminary evidence that fatigue contributes to anhedonia in stable individuals diagnosed with schizophrenia. Front Psychiatry 2023; 14:1098932. [PMID: 36778632 PMCID: PMC9911435 DOI: 10.3389/fpsyt.2023.1098932] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 01/11/2023] [Indexed: 01/28/2023] Open
Abstract
OBJECTIVES Anhedonia and fatigue are trans-diagnostic symptoms commonly observed in schizophrenia. Anhedonia is a core negative symptom with a strong relationship with depression and is associated with diminished global functioning. Similarly, fatigue is also associated to depression and research across psychiatric illnesses indicate that fatigue may persist even when primary symptoms are treated. Although fatigue is common in people diagnosed with schizophrenia, it is under studied within this population. The objective of this exploratory study was to investigate the association of fatigue and anhedonia by controlling for depression in a sample of individuals diagnosed with schizophrenia. METHOD Fifty-one stable individuals diagnosed with schizophrenia from the University Department of Adult Psychiatry in Montpellier took part in this study. Participants completed questionnaires on fatigue impact and depression, and were assessed for symptom severity. Following data collection, statistical analyses were conducted in order to explore associations between clinical variables and fatigue impact. Based on the results obtained, a hierarchical linear regression was conducted in order to investigate whether fatigue impact contributed to the variance of negative symptoms. RESULTS The hierarchical linear regression indicated that when controlling for depression, fatigue impact contributes to ~20% of the variance of anhedonia. Together the social impact of fatigue and depression contribute to 24% of the variation of anhedonia. CONCLUSION To the best of our knowledge, this exploratory study is the first to investigate and show that fatigue impact may contribute to anhedonia. We recommend further research to investigate fatigue, its impact on symptomatology, and better categorization of negative symptoms in hopes of developing targeted fatigue treatment interventions.
Collapse
Affiliation(s)
- Yasmine Laraki
- University Department of Adult Psychiatry, CHU Montpellier, University of Montpellier, Hôpital la Colombière, Montpellier, France.,Université Paul Valéry Montpellier 3, EPSYLON EA, Bouisson Bertrand, Montpellier, France
| | - Sophie Bayard
- Université Paul Valéry Montpellier 3, EPSYLON EA, Bouisson Bertrand, Montpellier, France
| | - Amandine Decombe
- University Department of Adult Psychiatry, CHU Montpellier, University of Montpellier, Hôpital la Colombière, Montpellier, France
| | - Delphine Capdevielle
- University Department of Adult Psychiatry, CHU Montpellier, University of Montpellier, Hôpital la Colombière, Montpellier, France.,IGF, University of Montpellier, CNRS, INSERM, Montpellier, France
| | - Stéphane Raffard
- University Department of Adult Psychiatry, CHU Montpellier, University of Montpellier, Hôpital la Colombière, Montpellier, France.,Université Paul Valéry Montpellier 3, EPSYLON EA, Bouisson Bertrand, Montpellier, France
| |
Collapse
|
2
|
Honoré H, Skovbjerg F, Pedersen AR, Mechlenburg I, Nielsen JF. Exploring physical activity during the discharge transition phase in people with acquired brain injury – an observational study. Arch Rehabil Res Clin Transl 2022; 5:100247. [PMID: 36968172 PMCID: PMC10036229 DOI: 10.1016/j.arrct.2022.100247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Objective To explore physical activity trajectories during the discharge transition phase after in-hospital rehabilitation after acquired brain injury (ABI). Design A cross-sectional observational study. Setting Transition from an in-hospital rehabilitation center to community-based living. Participants Independently walking patients with ABI (n=10) who were ready for discharge. Interventions Not applicable. Main Outcome Measures Two weeks of physically active time continuously monitored with an accelerometer and classified by a machine learning algorithm summed as daily average and total active time for each participant and classified into standing, walking, running, bike riding, stair climbing, ambulation, and sedentary time. Physical activity trajectories showing the total daily active time for all participants were inspected before and after discharge, and the average active time per participant was plotted against self-reported scores of potentially explanatory factors. Results Average total physically active time was 5:49 hours (range 4:26-7:13 hours). Average daily physically active time for participants appeared to be related to functional independence measure sub scores, fatigue, and pre-morbid physical activity level. Individual physical activity trajectories showed a decreased walking activity after discharge, which increased again after 1-2 days. Conclusions Daily total physically active time among participants was higher than expected. Factors expectedly related to physical activity trajectories in the discharge transition phase were explored and showed some relation to functional scores.
Collapse
Affiliation(s)
- Helene Honoré
- Hammel Neurorehabilitation Centre & University Research Clinic (HNURC), Hammel, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Corresponding author Helene Honoré, HNURC, Voldbyvej 15A, DK-8450 Hammel, Denmark.
| | - Frederik Skovbjerg
- Hammel Neurorehabilitation Centre & University Research Clinic (HNURC), Hammel, Denmark
| | - Asger Roer Pedersen
- Hammel Neurorehabilitation Centre & University Research Clinic (HNURC), Hammel, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | | | - Jørgen Feldbæk Nielsen
- Hammel Neurorehabilitation Centre & University Research Clinic (HNURC), Hammel, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| |
Collapse
|
3
|
Binz C, Osmanovic A, Thomas NH, Stolte B, Freigang M, Cordts I, Griep R, Uzelac Z, Wurster CD, Kamm C, Siegler HA, Wieselmann G, Hermann A, Lingor P, Deschauer M, Ludolph AC, Meyer T, Günther R, Hagenacker T, Petri S, Schreiber-Katz O. Validity and reliability of the German multidimensional fatigue inventory in spinal muscular atrophy. Ann Clin Transl Neurol 2022; 9:351-362. [PMID: 35191616 PMCID: PMC8935281 DOI: 10.1002/acn3.51520] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 01/27/2022] [Accepted: 01/31/2022] [Indexed: 11/28/2022] Open
Abstract
Objective Fatigue is a common and burdensome symptom of spinal muscular atrophy. Given its complex interactions, different dimensions of fatigue need to be investigated. The Multidimensional Fatigue Inventory is a widely used instrument that captures five distinct dimensions. The aim of this study was to investigate the validity and reliability of the German Multidimensional Fatigue Inventory in spinal muscular atrophy and to evaluate the presence of clinically relevant fatigue. Methods One hundred and forty adult spinal muscular atrophy patients completed the Multidimensional Fatigue Inventory in a nationwide, multicenter, cross‐sectional study. Structural validity was explored using principal component analysis. Cronbach’s α was calculated to evaluate internal consistency. Convergent validity was assessed by correlation with a Visual Analog Scale for fatigue and the EuroQol‐Five Dimension‐Five Level Scale as a measure of quality of life. Results The original five‐component model of the questionnaire constituted an acceptable fit. Internal consistency and convergent validity of general, physical, mental fatigue, and reduced activity were good. We observed a floor effect for mental fatigue. While physical fatigue exceeded the cutoff for clinically relevant fatigue, all dimensions but reduced motivation correlated negatively with quality of life. Age, depression, and ≥4 copies of the survival motor neuron 2 gene were associated with higher general/physical fatigue; unemployed participants reported higher scores for reduced activity/motivation. Interpretation The Multidimensional Fatigue Inventory is a valid and reliable instrument to assess different dimensions of fatigue in spinal muscular atrophy. Fatigue is a relevant problem in spinal muscular atrophy and its assessment should be incorporated into standard care.
Collapse
Affiliation(s)
- Camilla Binz
- Department of Neurology, Hannover Medical School, Hanover, Germany
| | - Alma Osmanovic
- Department of Neurology, Hannover Medical School, Hanover, Germany.,Essen Center for Rare Diseases (EZSE), University Hospital Essen, Essen, Germany
| | - Nele H Thomas
- Department of Biometry, Hannover Medical School, Hanover, Germany
| | - Benjamin Stolte
- Department of Neurology, University Hospital Essen, Essen, Germany
| | - Maren Freigang
- Department of Neurology, Technische Universität Dresden, Dresden, Germany
| | - Isabell Cordts
- Department of Neurology, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
| | - Ramona Griep
- Department of Neurology, Center for ALS, SMA and other Motor Neuron Disorders, Charité - Universitätsmedizin Berlin, Berlin, Germany.,Ambulanzpartner Soziotechnologie APST GmbH, Berlin, Germany
| | - Zeljko Uzelac
- Department of Neurology, Ulm University, Ulm, Germany
| | | | - Christoph Kamm
- Translational Neurodegeneration Section "Albrecht-Kossel", Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
| | - Hannah A Siegler
- Department of Neurology, Hannover Medical School, Hanover, Germany
| | - Gary Wieselmann
- Department of Neurology, Hannover Medical School, Hanover, Germany
| | - Andreas Hermann
- Translational Neurodegeneration Section "Albrecht-Kossel", Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany.,German Center for Neurodegenerative Diseases (DZNE) Rostock/Greifswald, Rostock, Germany
| | - Paul Lingor
- Department of Neurology, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
| | - Marcus Deschauer
- Department of Neurology, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
| | - Albert C Ludolph
- Department of Neurology, Ulm University, Ulm, Germany.,German Center for Neurodegenerative Diseases (DZNE) Ulm, Ulm, Germany
| | - Thomas Meyer
- Department of Neurology, Center for ALS, SMA and other Motor Neuron Disorders, Charité - Universitätsmedizin Berlin, Berlin, Germany.,Ambulanzpartner Soziotechnologie APST GmbH, Berlin, Germany
| | - René Günther
- Department of Neurology, Technische Universität Dresden, Dresden, Germany.,German Center for Neurodegenerative Diseases (DZNE) Dresden, Dresden, Germany
| | - Tim Hagenacker
- Department of Neurology, University Hospital Essen, Essen, Germany
| | - Susanne Petri
- Department of Neurology, Hannover Medical School, Hanover, Germany
| | | |
Collapse
|
4
|
Kazukauskiene N, Bunevicius A, Gecaite-Stonciene J, Burkauskas J. Fatigue, Social Support, and Depression in Individuals With Coronary Artery Disease. Front Psychol 2021; 12:732795. [PMID: 34744903 PMCID: PMC8565598 DOI: 10.3389/fpsyg.2021.732795] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 09/28/2021] [Indexed: 11/13/2022] Open
Abstract
Background: Given that approximately one-third of individuals with coronary artery disease (CAD) remain severely fatigued after completion the cardiac rehabilitation, it is necessary to identify reliable intervention targets aimed at reducing fatigue. Perceived social support is closely linked to health outcomes and depressive symptoms in individuals with CAD. However, to our knowledge, the relationship between subjective fatigue levels and social support in those with CAD has not been analyzed. Objective: We aimed to examine the associations between perceived social support and subjective fatigue levels in individuals with CAD with and without depression symptoms. Methods: This cross-sectional study was comprised of 1,036 participants with CAD (57±9years, 77% men) 1-2weeks after acute coronary syndrome (ACS). Participants completed the Hospital Anxiety and Depression scale (HADS), Multidimensional Fatigue Inventory-20 (MFI-20), and the Multidimensional Scale of Perceived Social Support (MSPSS). Results: In total, 12% (n=129) of study participants had elevated depression symptoms (HADS score≥8). In individuals with CAD and depressive symptoms, after adjustment for sex, age, New York Heart Association (NYHA) functional class, and anxiety, linear regression analyses showed significant inverse associations between higher social support from others and general, physical fatigue as well as reduced activity and motivation (p<0.001). Following the same method of statistical analysis and control in non-depressed individuals with CAD (88%), social support from family was inversely linked to mental fatigue (p's<0.05). Similarly, social support from friends was significantly associated with lower general, physical, and mental fatigue as well as reduced activity, while social support from others was significantly associated with lower general and mental fatigue (p's<0.001). The overall higher total support was linked with reduced motivation (p<0.05) in the depressed study participants, while there was lower general and mental fatigue (p<0.05) in non-depressed individuals. Conclusion: The results of this study suggest that fatigue and its features could be associated by the perceived social support in individuals with CAD following ACSs. While in individuals with CAD and depressive symptoms, greater subjective fatigue is associated with less perceived social support from others, higher levels of subjective fatigue in non-depressed individuals with CAD are significantly associated with reduced perceived social support from friends.
Collapse
Affiliation(s)
- Nijole Kazukauskiene
- Laboratory of Behavioral Medicine, Neuroscience Institute, Lithuanian University of Health Sciences, Palanga, Lithuania
| | - Adomas Bunevicius
- Laboratory of Behavioral Medicine, Neuroscience Institute, Lithuanian University of Health Sciences, Palanga, Lithuania
| | - Julija Gecaite-Stonciene
- Laboratory of Behavioral Medicine, Neuroscience Institute, Lithuanian University of Health Sciences, Palanga, Lithuania
| | - Julius Burkauskas
- Laboratory of Behavioral Medicine, Neuroscience Institute, Lithuanian University of Health Sciences, Palanga, Lithuania
| |
Collapse
|
5
|
Billones R, Liwang JK, Butler K, Graves L, Saligan LN. Dissecting the fatigue experience: A scoping review of fatigue definitions, dimensions, and measures in non-oncologic medical conditions. Brain Behav Immun Health 2021; 15:100266. [PMID: 34589772 PMCID: PMC8474156 DOI: 10.1016/j.bbih.2021.100266] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 04/29/2021] [Accepted: 05/03/2021] [Indexed: 11/30/2022] Open
Abstract
Introduction Fatigue is a prevalent and potentially debilitating symptom that impacts the health-related quality-of-life of individuals diagnosed with acute and chronic medical conditions. Yet, its etiologic mechanism is not fully understood. Additionally, the assessment and determination of the clinical meaning of fatigue and its multidimensionality may vary by medical condition. Methods A scoping literature review was conducted to investigate how fatigue is defined and measured, including its dimensions, in non-oncologic medical conditions. The PubMed database was searched using keywords. Results Overall, 8376 articles were screened at the title/abstract levels, where 293 articles were chosen for full-text review that mentioned fatigue or included fatigue measures. The review of the full text excluded 246 articles that did not assess at least one fatigue dimension using validated questionnaires and clinical tests. The final set included 47 articles. Physical fatigue was the most assessed fatigue dimension and the Multidimensional Fatigue Inventory was the most widely used questionnaire to assess fatigue in this review. Limitations This review was limited by including only English-language publications and using PubMed as the sole database for the search. Conclusions This review affirms that fatigue is a multidimensional construct, agnostic of medical condition, and that individual fatigue dimensions can be measured by validated clinical measures. Future research should focus on expanding the repertoire of clinical measures to assess specific fatigue dimensions. The 27 different validated clinical measures used to assess fatigue and its dimensions; 20 instruments assessed the physical, 8 for mental, 7 cognitive, 5 for motivational, 2 for emotional, 1 peripheral, 1 for central, 1 psychosocial. Physical was the most measured dimension, as assessed in 42 of 47 included articles. This review affirms that fatigue is a multidimensional construct, agnostic of medical condition, and that individual fatigue dimensions can be measured by validate clinical measures.
Collapse
Affiliation(s)
| | | | | | | | - Leorey N. Saligan
- Corresponding author. National Institute of Nursing Research, National Institutes of Health 9000, Rockville Pike, Building 3, Room 5E14, Bethesda, MD, 20892, USA.
| |
Collapse
|
6
|
Li J, Huang M, Pan F, Li Z, Shen Z, Jin K, Zhao H, Lu S, Shang D, Xu Y, Wang J. Aberrant Development of Cross-Frequency Multiplex Functional Connectome in First-Episode, Drug-Naive Major Depressive Disorder and Schizophrenia. Brain Connect 2021; 12:538-548. [PMID: 34269608 DOI: 10.1089/brain.2021.0088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Major depressive disorder (MDD) and schizophrenia (SCH) are both characterized by neurodevelopmental abnormalities; however, transdiagnostic and diagnosis-specific patterns of such abnormalities have rarely been examined, particularly in large-scale functional brain networks via advanced multilayer network models. METHODS Here we collected resting-state functional MRI data from 45 MDD patients, 64 SCH patients and 48 healthy controls (13-45 years old), and constructed functional networks in different frequency intervals. The frequency-dependent networks were then fused by multiplex network models, followed by graph-based topological analyses. RESULTS We found that functional networks of the patients showed common neurodevelopmental abnormalities in the right ventromedial parietooccipital sulcus (opposite correlations with age to healthy controls), while functional networks of the MDD patients exhibited specific alterations in the left superior parietal lobule and right precentral gyrus with respect to cross-frequency interactions. These findings were quite different from those from brain networks within each frequency interval, which revealed SCH-specific neurodevelopmental abnormalities in the right superior temporal gyrus (opposite correlations with age to the other two groups) in 0.027-0.073 Hz, and SCH-specific alterations in the left superior temporal gyrus and bilateral insula in 0.073-0.198 Hz. Finally, multivariate analysis of age prediction revealed that the subcortical network lost predict ability in both patient groups, while the visual network exhibited additional prediction ability in the MDD patients. DISCUSSION AND CONCLUSION Altogether, these findings demonstrate transdiagnostic and diagnosis-specific neurodevelopmental abnormalities and alterations in large-scale functional brain networks between MDD and SCH, which have important implications for understanding shared and unique neural mechanisms underlying the diseases.
Collapse
Affiliation(s)
- Junle Li
- Institute for Brain Research and Rehabilitation, Guangdong Key Laboratory of Mental Health and Cognitive Science, Center for Studies of Psychological Application, South China Normal University, Guangzhou, China
| | - Manli Huang
- Department of Psychiatry, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
- The Key Laboratory of Mental Disorder's Management of Zhejiang Province, Hangzhou, China
- Zhejiang Engineering Center for Mathematical Mental Health, Hangzhou, China
| | - Fen Pan
- Department of Psychiatry, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
- The Key Laboratory of Mental Disorder's Management of Zhejiang Province, Hangzhou, China
- Zhejiang Engineering Center for Mathematical Mental Health, Hangzhou, China
| | - Zhen Li
- Institute for Brain Research and Rehabilitation, Guangdong Key Laboratory of Mental Health and Cognitive Science, Center for Studies of Psychological Application, South China Normal University, Guangzhou, China
| | - Zhe Shen
- Department of Psychiatry, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
- The Key Laboratory of Mental Disorder's Management of Zhejiang Province, Hangzhou, China
- Zhejiang Engineering Center for Mathematical Mental Health, Hangzhou, China
| | - Kangyu Jin
- Department of Psychiatry, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
- The Key Laboratory of Mental Disorder's Management of Zhejiang Province, Hangzhou, China
- Zhejiang Engineering Center for Mathematical Mental Health, Hangzhou, China
| | - Haoyang Zhao
- Department of Psychiatry, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
- The Key Laboratory of Mental Disorder's Management of Zhejiang Province, Hangzhou, China
- Zhejiang Engineering Center for Mathematical Mental Health, Hangzhou, China
| | - Shaojia Lu
- Department of Psychiatry, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
- The Key Laboratory of Mental Disorder's Management of Zhejiang Province, Hangzhou, China
- Zhejiang Engineering Center for Mathematical Mental Health, Hangzhou, China
| | - Desheng Shang
- Department of Radiology, First Affiliated Hospital, College of Medicine, Zhejiang University, The Key Laboratory of Mental Disorder's Management of Zhejiang Province, Hangzhou, China
| | - Yi Xu
- Department of Psychiatry, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
- The Key Laboratory of Mental Disorder's Management of Zhejiang Province, Hangzhou, China
- Zhejiang Engineering Center for Mathematical Mental Health, Hangzhou, China
| | - Jinhui Wang
- Institute for Brain Research and Rehabilitation, Guangdong Key Laboratory of Mental Health and Cognitive Science, Center for Studies of Psychological Application, South China Normal University, Guangzhou, China
- Key Laboratory of Brain, Cognition and Education Sciences, Ministry of Education, Guangzhou, China
| |
Collapse
|
7
|
Ivanov SV, Kharkova GS, Giatsintova AA, Voronova EI. [Asthenic disorders in schizophrenia (schizoasthenia) on the model of hypochondriac schizophrenia]. Zh Nevrol Psikhiatr Im S S Korsakova 2021; 121:7-12. [PMID: 33728844 DOI: 10.17116/jnevro20211210217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To determine the structure and mechanisms of interaction of asthenic disorders with negative and positive psychopathological symptoms in hypochondriac schizophrenia. MATERIAL AND METHODS The study included male and female patients, aged 17-69 years, with a diagnosis of hypochondriac schizophrenia (F20.80 according to ICD-10) and asthenia symptoms. The main research method was clinical, which was supplemented by pathopsychological examination and the use of psychometric scales (PANSS, SANS, MFI-20,VAS asthenia). RESULTS AND CONCLUSION Asthenia in case of hypochondriac schizophrenia (schizoasthenia) integrates two unrelated phenomena: «weakness» and «exhaustion» (intolerance to stress), and also acts within the framework of three psychopathological syndromes: neurotic, senestopathic/hypochondriac and overvalued hypochondria. Asthenia with hypochondriac schizophrenia is a predictor of an unfavorable social and clinical prognosis. Integrating into the structure of the clinical manifestations of hypochondriac schizophrenia, asthenia forms close relationships with positive and negative disorders of the type of «general syndromes», but remains outside the categories of both positive and negative symptoms of the disease, thus forming a separate «dimension» in the psychopathological space of schizophrenia.
Collapse
Affiliation(s)
- S V Ivanov
- Mental Health Research Centre, Moscow, Russia.,Sechenov First Moscow State Medical University, Moscow, Russia
| | | | | | | |
Collapse
|
8
|
Mousa RF, Al-Hakeim HK, Alhaideri A, Maes M. Chronic fatigue syndrome and fibromyalgia-like symptoms are an integral component of the phenome of schizophrenia: neuro-immune and opioid system correlates. Metab Brain Dis 2021; 36:169-183. [PMID: 32965599 DOI: 10.1007/s11011-020-00619-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 09/14/2020] [Indexed: 01/25/2023]
Abstract
Physiosomatic symptoms are an important part of schizophrenia phenomenology. The aim of this study is to examine the biomarker, neurocognitive and symptomatic correlates of physiosomatic symptoms in schizophrenia. We recruited 115 schizophrenia patients and 43 healthy controls and measured the Fibromyalgia and Chronic Fatigue Syndrome Rating (FF) scale, schizophrenia symptom dimensions, and the Brief Assessment of Cognition in Schizophrenia. We measured neuro-immune markers including plasma CCL11 (eotaxin), interleukin-(IL)-6, IL-10, Dickkopf protein 1 (DKK1), high mobility group box 1 protein (HMGB1) and endogenous opioid system (EOS) markers including κ-opioid receptor (KOR), μ-opioid receptor (MOR), endomorphin-2 (EM2) and β-endorphin. Patients with an increased FF score display increased ratings of psychosis, hostility, excitement, formal though disorders, psycho-motor retardation and negative symptoms as compared with patients with lower FF scores. A large part of the variance in the FF score (55.1%) is explained by the regression on digit sequencing task, token motor task, list learning, IL-10, age (all inversely) and IL-6 (positively). Neural network analysis shows that the top-6 predictors of the FF score are (in descending order): IL-6, HMGB1, education, MOR, KOR and IL-10. We found that 45.1% of the variance in a latent vector extracted from cognitive test scores, schizophrenia symptoms and the FF score was explained by HMGB1, MOR, EM2, DKK1, and CCL11. Physiosomatic symptoms are an integral part of the phenome of schizophrenia. Neurotoxic immune pathways and lowered immune regulation coupled with alterations in the EOS appear to drive the physiosomatic symptoms of schizophrenia.
Collapse
Affiliation(s)
- Rana Fadhil Mousa
- Faculty of Veterinary Medicine, University of Kerbala, Kerbala, Iraq
| | | | - Amer Alhaideri
- College of Medicine, University of Kerbala, Kerbala, Iraq
| | - Michael Maes
- Department of Psychiatry, Faculty of Medicine, King Chulalongkorn memorial Hospital, Chulalongkorn University, Bangkok, Thailand.
- Department of Psychiatry, Medical University of Plovdiv, Plovdiv, Bulgaria.
- School of Medicine, IMPACT Strategic Research Centre, Deakin University, PO Box 281, Geelong, VIC, 3220, Australia.
| |
Collapse
|
9
|
Taliercio J, Bonasera B, Portillo C, Ramjas E, Serper M. Physical Activity, Sleep-related Behaviors and Severity of Symptoms in Schizophrenia. Psychiatry Res 2020; 294:113489. [PMID: 33038793 DOI: 10.1016/j.psychres.2020.113489] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 09/25/2020] [Indexed: 12/22/2022]
Abstract
The beneficial effects of a healthy sleep hygiene and regular physical activity have both been noted in improving psychopathology symptom severity. No study to date however, has evaluated the potential therapeutic effects of both sleep and exercise simultaneously in individuals diagnosed with schizophrenia. To examine the two variables concurrently, in the present report, patients with diagnoses of schizophrenia spectrum disorders (n = 64), were administered assessments that measured both their physical activity and sleep-related behaviors. Additionally, patients' symptom severity and cognitive and daily functioning abilities were also assessed. It was found sleep hygiene and physical activity were associated with patients' symptom severity and cognitive capacities, but not with their daily functioning abilities. Further, no interaction effects were found between sleep hygiene and physical activity. These results suggest that physical activity and sleep hygiene should be considered, independently, in their contribution to psychopathology.
Collapse
Affiliation(s)
| | | | | | | | - Mark Serper
- Department of Psychology, Hofstra University, Hempstead, NY; Department of Psychiatry, Icahn Mount Sinai School of Medicine.
| |
Collapse
|
10
|
Gecaite-Stonciene J, Bunevicius A, Burkauskas J, Brozaitiene J, Neverauskas J, Mickuviene N, Kazukauskiene N. Validation of the Multidimensional Fatigue Inventory with Coronary Artery Disease Patients. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17218003. [PMID: 33143183 PMCID: PMC7662819 DOI: 10.3390/ijerph17218003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 10/23/2020] [Accepted: 10/27/2020] [Indexed: 12/26/2022]
Abstract
BACKGROUND Fatigue is a common distressing symptom in patients with coronary artery disease (CAD). The Multidimensional Fatigue Inventory (MFI) is used for measuring fatigue in various clinical settings. Nevertheless, its multidimensional structure has not been consistent across studies. Thus, we aimed to psychometrically evaluate the MFI in patients with CAD. METHODS In sum, 1162 CAD patients completed questionnaires assessing their subjective fatigue level (MFI-20), mental distress symptoms (HADS, STAI), and health-related quality of life (SF-36). Participants also completed exercise capacity (EC) testing. RESULTS Confirmatory factor analysis of the four-factor model, showed acceptable fit (CFI = 0.905; GFI = 0.895; NFI = 0.893, RMSEA = 0.077). After eliminating four items, confirmatory factor analysis testing showed improvement in the four-factor model of the MFI-16 (CFI = 0.910; GFI = 0.909; NFI = 0.898, RMSEA = 0.077). Internal consistency values were adequate for the total score and four MFI-16 subscales: General fatigue, physical fatigue, reduced activity, and mental fatigue with Cronbach's α range: 0.60-0.82. The inadequate value (Cronbach's α = 0.43) was received for the subscale of reduced motivation in both MFI-20 and MFI-16. Correlations between the MFI-16 and HADS, STAI, SF-36, and EC measures were statistically significant (all p's < 0.001). CONCLUSIONS The Lithuanian version of the modified MFI of 16 items showed good factorial structure and satisfactory psychometric characteristics, except for reduced motivation subscale.
Collapse
|
11
|
Assessment of the efficacy of a fatigue management therapy in schizophrenia: study protocol for a randomized, controlled multi-centered study (ENERGY). Trials 2020; 21:797. [PMID: 32943079 PMCID: PMC7500003 DOI: 10.1186/s13063-020-04606-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 07/12/2020] [Indexed: 11/17/2022] Open
Abstract
Background Fatigue is a well-known common clinical feature of numerous chronic diseases including various forms of cancer, neurological disorders such as multiple sclerosis, and psychiatric disorders. A significant proportion of people with schizophrenia (30–60%) reportedly experience fatigue, which impacts negatively on participation in various activities, including work, study, leisure, and social pursuits. Causes of fatigue in schizophrenia are poorly understood and there are no established treatments. Several evidence-based interventions for fatigue syndrome including psychoeducation, cognitive behavioral therapy, and graded exercise therapy have been shown to be effective in other medical conditions and could be adapted to address fatigue in schizophrenia patients. As there are no psychosocial or pharmacological interventions with proved efficacy for fatigue in schizophrenia, there is an urgent need for the development of strategies to improve fatigue management in schizophrenia. The aim of this project is to evaluate in a single blind randomized clinical trial the efficacy of a cognitive-behavioral therapy (CBT) intervention compared to treatment as usual (TAU) on fatigue as the main outcome in schizophrenia patients. Clinical symptoms, physical functioning, major cognitive functions, quality of life and functioning, treatment dosage, daily motor activity, biological markers with inflammatory markers are also considered as secondary outcomes. Methods/design Two hundred patients meeting the inclusion criteria will be randomized to either of the study arms (intervention or TAU). The ENERGY intervention will be delivered according to a standardized treatment manual comprising six modules addressing fatigue and sleep over 14 individual therapy sessions. The treatment encompasses core CBT principles of psycho-education, behavioral activation, behavioral experiments, cognitive restructuring, problem-solving, and relapse prevention. Sessions will follow the traditional CBT structure of agenda setting, review of homework tasks, and introduction of a new concept/technique with collaborative discussions on how to implement such strategies in the participant’s day-to-day environment. Our primary endpoint will be the severity of fatigue assessed at baseline and at the 9-month follow-up using the “Multidimensional Fatigue Inventory” (MFI). Discussion The trial will provide the first test of CBT intervention for fatigue for patients with schizophrenia. This study will also test to what extent the treatment can be implemented in everyday practice. Trial registration ClinicalTrials.govNCT04332601. Registered on 10 April 2020.
Collapse
|
12
|
Almulla AF, Al-Hakeim HK, Abed MS, Carvalho AF, Maes M. Chronic fatigue and fibromyalgia symptoms are key components of deficit schizophrenia and are strongly associated with activated immune-inflammatory pathways. Schizophr Res 2020; 222:342-353. [PMID: 32467068 DOI: 10.1016/j.schres.2020.05.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 01/26/2020] [Accepted: 05/03/2020] [Indexed: 12/18/2022]
Abstract
There is now evidence that schizophrenia and especially deficit schizophrenia (DefSCZ) (a phenotype characterized by negative symptoms) is accompanied by activated immune-inflammatory pathways. A subset of patients with schizophrenia and DefSCZ experience physiosomatic symptoms reminiscent of chronic fatigue and fibromyalgia. However, there are no data whether, in DefSCZ, physiosomatic symptoms are associated with increased levels of cytokines/chemokines. This study examined the associations between physiosomatic symptoms, as assessed with the FibroFatigue (FF) scale, and symptoms of DefSCZ as well as interleukin IL-1β, IL-1 receptor antagonist (sIL-1RA), tumor necrosis factor (TNF)-α and CCL11 (eotaxin) in 120 DefSCZ patients (as defined by the Schedule for Deficit Schizophrenia) and 54 healthy controls. In DefSCZ, there were robust associations between FF and negative symptoms, psychosis, hostility, excitation, mannerism, psychomotor retardation and formal thought disorders. A latent vector extracted from those DefSCZ symptom domains also loaded highly on the total FF score and showed adequate convergent validity, internal consistency reliability and predictive relevance. The FF score was significantly associated with impairments in semantic and episodic memory and executive functions. Soft Independent Modelling of Class Analogy showed that the FF items discriminated DefSCZ from controls with an 100% accuracy. Interleukin IL-1β, IL-1RA, TNF-α and CCL11 explained 59.4% of the variance in the LV extracted from the FF and DefSCZ symptoms. In conclusion, these data show that physiosomatic symptoms are a core component of DefSCZ phenomenology and are strongly associated with activated immune pathways, which have neurotoxic effects.
Collapse
Affiliation(s)
- Abbas F Almulla
- Medical Laboratory Technology Department, College of Medical Technology, The Islamic University, Najaf, Iraq
| | | | | | - Andre F Carvalho
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada; Centre for Addiction and Mental Health (CAMH), Toronto, ON, Canada
| | - Michael Maes
- Department of Psychiatry, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Department of Psychiatry, Medical University of Plovdiv, Plovdiv, Bulgaria; IMPACT Strategic Research Centre, Deakin University, Geelong, Australia.
| |
Collapse
|
13
|
Ji M, Wang AH, Ye J, Shen YH, Chen CM, Yu C, Li LF. Effects of the health belief model following acute exacerbation of chronic obstructive pulmonary disease in a hospital in China. J Thorac Dis 2019; 11:3593-3598. [PMID: 31559066 DOI: 10.21037/jtd.2019.07.40] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Background This study aims to investigate the effects of education with health belief model (HBM) on anxiety and fatigue among patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD). Methods Patients with AECOPD admitted into Taizhou People's Hospital, Jiangsu, China between December 2012 and October 2013 were randomly selected for the present study according to random number table. A total of 99 cases with anxiety were included. These patients were divided into two groups: experimental group educated by HBM (n=47), and control group educated by conventional method (n=52). The scores for anxiety and fatigue were evaluated using the self-rating anxiety scale (SAS) and multidimensional fatigue inventory (MFI-20). Results After educational intervention by HBM, patients achieved a significant decrease in anxiety and fatigue scores, when compared to patients in the control group, who were educated by the conventional method at the time of admission, discharge, and 6 weeks after discharge (P<0.05). Conclusions HBM program effectively may alleviate anxiety and fatigue, providing necessary information for symptom management among patients with AECOPD.
Collapse
Affiliation(s)
- Mei Ji
- Department of Respiratory Medicine, Taizhou People's Hospital, Taizhou 225300, China
| | - Ai-Hong Wang
- Department of Basic Nursing, Nanjing University of Chinese Medicine, School of Nursing, Nanjing 210023, China
| | - Jun Ye
- Department of Laboratory Medicine, Taizhou People's Hospital, Taizhou 225300, China
| | - Ya-Hui Shen
- Department of Respiratory Medicine, Taizhou People's Hospital, Taizhou 225300, China
| | - Chun-Mei Chen
- Department of Respiratory Medicine, Taizhou People's Hospital, Taizhou 225300, China
| | - Chen Yu
- Department of Respiratory Medicine, Taizhou People's Hospital, Taizhou 225300, China
| | - Li-Fang Li
- Department of Nursing, Taizhou People's Hospital, Taizhou 225300, China
| |
Collapse
|
14
|
Chu L, Valencia IJ, Garvert DW, Montoya JG. Onset Patterns and Course of Myalgic Encephalomyelitis/Chronic Fatigue Syndrome. Front Pediatr 2019; 7:12. [PMID: 30805319 PMCID: PMC6370741 DOI: 10.3389/fped.2019.00012] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 01/14/2019] [Indexed: 12/19/2022] Open
Abstract
Background: Epidemiologic studies of myalgic encephalomyelitis/ chronic fatigue syndrome (ME/CFS) have examined different aspects of this disease separately but few have explored them together. Objective: Describe ME/CFS onset and course in one United States-based cohort. Methods: One hundred and fifty subjects fitting Fukuda 1994 CFS criteria completed a detailed survey concerning the initial and subsequent stages of their illness. Descriptive statistics, graphs, and tables were used to illustrate prevalence and patterns of characteristics. Results: The most common peri-onset events reported by subjects were infection-related episodes (64%), stressful incidents (39%), and exposure to environmental toxins (20%). For 38% of subjects, more than 6 months elapsed from experiencing any initial symptom to developing the set of symptoms comprising their ME/CFS. Over time, the 12 most common symptoms persisted but declined in prevalence, with fatigue, unrefreshing sleep, exertion-related sickness, and flu-like symptoms declining the most (by 20-25%). Conversely, cognitive symptoms changed the least in prevalence, rising in symptom ranking. Pregnancy, menopause, and menstrual cycles exacerbated many women's symptoms. Fatigue-related function was not associated with duration of illness or age; during the worst periods of their illness, 48% of subjects could not engage in any productive activity. At the time of survey, 47% were unable to work and only 4% felt their condition was improving steadily with the majority (59%) describing a fluctuating course. Ninety-seven percent suffered from at least one other illness: anxiety (48%), depression (43%), fibromyalgia (39%), irritable bowel syndrome (38%), and migraine headaches (37%) were the most diagnosed conditions. Thirteen percent came from families where at least one other first-degree relative was also afflicted, rising to 27% when chronic fatigue of unclear etiology was included. Conclusions: This paper offers a broad epidemiologic overview of one ME/CFS cohort in the United States. While most of our findings are consistent with prior studies, we highlight underexamined aspects of this condition (e.g., the evolution of symptoms) and propose new interpretations of findings. Studying these aspects can offer insight and solutions to the diagnosis, etiology, pathophysiology, and treatment of this condition.
Collapse
Affiliation(s)
- Lily Chu
- Stanford ME/CFS Initiative, Division of Infectious Diseases and Geographic Medicine, Stanford University School of Medicine, Stanford, CA, United States
| | - Ian J Valencia
- Stanford ME/CFS Initiative, Division of Infectious Diseases and Geographic Medicine, Stanford University School of Medicine, Stanford, CA, United States
| | - Donn W Garvert
- Stanford ME/CFS Initiative, Division of Infectious Diseases and Geographic Medicine, Stanford University School of Medicine, Stanford, CA, United States
| | - Jose G Montoya
- Stanford ME/CFS Initiative, Division of Infectious Diseases and Geographic Medicine, Stanford University School of Medicine, Stanford, CA, United States
| |
Collapse
|
15
|
Yakimets AV, Zozulya SA, Oleichik IV, Klyushnik TP. [Dynamics of clinical and biological indices of the asthenic symptom-complex during immunotropic therapy of patients with schizophrenia]. Zh Nevrol Psikhiatr Im S S Korsakova 2018; 118:70-76. [PMID: 29652309 DOI: 10.17116/jnevro20181183170-76] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
AIM To identify clinical, psychopathological, and immunological features of the asthenic symptom-complex in patients with schizophrenia and to analyze the possibility of optimizing complex therapy of these conditions using the immunotropic drug bestim. MATERIAL AND METHODS Forty-three male patients, aged 20-55 years, were examined. Clinical examination of patients (PANSS, MFI-20) was performed before, and 5, 30 days after the end of treatment. The activity of inflammatory markers (leukocyte elastase (LE) and a1-proteinase inhibitor (a1-PI)) was determined in blood serum. RESULTS The affective-asthenic (32.5%) and asthenic-negative (67.5%) variants of the asthenic symptom-complex in schizophrenia characterized by different immune reactions (depending on LE activity) were revealed. Complex therapy with bestim contributed to a statistically significant reduction in the main clinical manifestations of endogenous asthenia in the majority of patients. More significant regression at a remote stage of the study was observed in the astheno-negative group of patients (p<0.001). CONCLUSION LE and a1-PI reflect the clinical and biological features of the asthenic symptom-complex which develops within the endogenous process. Normal/reduced activity of LE accompanied by the increased activity of a1-PI is the best predictor of bestim efficacy in terms of reduction of asthenic symptoms.
Collapse
Affiliation(s)
- A V Yakimets
- Mental Health Research Center, Moscow, Russia, Orel Psychiatric Hospital Of A Specialized Type With Intensive Supervision, Orel, Russia
| | - S A Zozulya
- Mental Health Research Center, Moscow, Russia, Orel Psychiatric Hospital Of A Specialized Type With Intensive Supervision, Orel, Russia
| | - I V Oleichik
- Mental Health Research Center, Moscow, Russia, Orel Psychiatric Hospital Of A Specialized Type With Intensive Supervision, Orel, Russia
| | - T P Klyushnik
- Mental Health Research Center, Moscow, Russia, Orel Psychiatric Hospital Of A Specialized Type With Intensive Supervision, Orel, Russia
| |
Collapse
|
16
|
Motivation deficits in individuals with social anhedonia. Psychiatry Res 2018; 261:527-534. [PMID: 29395876 DOI: 10.1016/j.psychres.2018.01.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 01/07/2018] [Accepted: 01/15/2018] [Indexed: 02/08/2023]
Abstract
Patients with schizophrenia have been reported to exhibit anhedonia, a reduced hedonic capacity and deficits in motivation for reward pursuit. However, it is unclear whether these deficits also exist in at-risk individuals prone to psychosis or not. The present study compared 26 individuals with social anhedonia and 28 healthy controls using a grip Effort-based Pleasure Experience Task (E-PET). The findings showed that individuals with social anhedonia did not increase their hard task choices with the elevation of reward magnitude and probability while healthy controls did. Higher reward probability and magnitude did not lead to more anticipatory pleasure in individuals with social anhedonia. The mean anticipatory pleasure experience ratings in individuals with social anhedonia were significantly lower than controls. Our results suggest that individuals with social anhedonia already exhibit motivational deficits during reward pursuit.
Collapse
|
17
|
Hedlund L, Gyllensten AL, Waldegren T, Hansson L. Assessing movement quality in persons with severe mental illness – Reliability and validity of the Body Awareness Scale Movement Quality and Experience. Physiother Theory Pract 2016; 32:296-306. [DOI: 10.3109/09593985.2015.1138008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Lena Hedlund
- Department of Health Sciences, Lund University, Lund, Sweden
| | | | - Tomas Waldegren
- The Country Hospital of Jönköping, Psychiatric Clinic, Jönköping, Sweden
| | - Lars Hansson
- Department of Health Sciences, Lund University, Lund, Sweden
| |
Collapse
|
18
|
Lund Rasmussen C, Klee Olsen M, Thit Johnsen A, Petersen MA, Lindholm H, Andersen L, Villadsen B, Groenvold M, Pedersen L. Effects of melatonin on physical fatigue and other symptoms in patients with advanced cancer receiving palliative care: A double-blind placebo-controlled crossover trial. Cancer 2015; 121:3727-36. [PMID: 26178160 DOI: 10.1002/cncr.29563] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 05/27/2015] [Accepted: 06/17/2015] [Indexed: 11/10/2022]
Abstract
BACKGROUND Patients with advanced cancer often experience fatigue and other symptoms that negatively impact their quality of life. The current trial investigated the effect of melatonin on fatigue and other symptoms in patients with advanced cancer. METHODS Patients who were aged ≥18 years, had a histologically confirmed stage IV cancer (TNM Classification), and who reported feeling significantly tired were recruited from the palliative care unit at the study institution. The study was a double-blind, randomized, placebo-controlled crossover trial. Patients received 1 week of melatonin at a dose of 20 mg or a placebo orally each night, before crossing over and receiving the opposite treatment for 1 week. Between the 2 periods, a washout period of 2 days was implemented. Outcomes were measured using the Multidimensional Fatigue Inventory (MFI-20) and The European Organization for Research and Treatment of Cancer Quality of Life Questionnaire. Physical fatigue from the MFI-20 was the primary outcome. The primary analysis was a complete complier analysis (ie, it included only those patients who had consumed at least 5 capsules per week and who had answered the MFI-20 on days 1, 7, 10, and 17). Sensitivity analysis using multiple imputations including all randomized patients and all patients completing the intervention were conducted. RESULTS A total of 72 patients were randomized. Fifty patients completed the intervention and 44 patients were complete compliers. No significant differences between the placebo and melatonin periods were found for physical fatigue, secondary outcomes, or explorative outcomes. CONCLUSIONS In the current study, oral melatonin at a dose of 20 mg was not found to improve fatigue or other symptoms in patients with advanced cancer.
Collapse
Affiliation(s)
| | - Marc Klee Olsen
- Research Unit, Department of Palliative Medicine, Bispebjerg Hospital, Copenhagen, Denmark
| | - Anna Thit Johnsen
- Research Unit, Department of Palliative Medicine, Bispebjerg Hospital, Copenhagen, Denmark
| | | | - Helena Lindholm
- Research Unit, Department of Palliative Medicine, Bispebjerg Hospital, Copenhagen, Denmark
| | - Line Andersen
- Research Unit, Department of Palliative Medicine, Bispebjerg Hospital, Copenhagen, Denmark
| | - Birgit Villadsen
- Research Unit, Department of Palliative Medicine, Bispebjerg Hospital, Copenhagen, Denmark
| | - Mogens Groenvold
- Research Unit, Department of Palliative Medicine, Bispebjerg Hospital, Copenhagen, Denmark.,Institute of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Lise Pedersen
- Research Unit, Department of Palliative Medicine, Bispebjerg Hospital, Copenhagen, Denmark
| |
Collapse
|