Tag: depression

Cell-mediated immunity in patients with chronic fatigue syndrome, healthy control subjects and patients with major depression

Abstract:

The chronic fatigue syndrome (CFS) is characterized by severe persistent fatigue and neuropsychiatric symptoms. It has been proposed that the abnormalities in cell-mediated immunity which have been documented in patients with CFS may be attributable to a clinical depression, prevalent in patients with this disorder.

Cell-mediated immune status was evaluated in patients with carefully defined CFS and compared with that of matched subjects with major depression (non-melancholic, non-psychotic) as well as healthy control subjects.

Patients with CFS demonstrated impaired lymphocyte responses to phytohaemagglutinin (PHA) stimulation, and reduced or absent delayed-type hypersensitivity (DTH) skin responses when compared either with subjects with major depression or with healthy control subjects (P less than 0.05 for each analysis).

Although depression is common in patients with CFS, the disturbances of cell-mediated immunity in this disorder differ in prevalence and magnitude from those associated with major depression. These observations strengthen the likelihood of a direct relationship between abnormal cell-mediated immunity and the etiology of CFS.

 

Source: Lloyd A, Hickie I, Hickie C, Dwyer J, Wakefield D. Cell-mediated immunity in patients with chronic fatigue syndrome, healthy control subjects and patients with major depression. Clin Exp Immunol. 1992 Jan;87(1):76-9. http://www.ncbi.nlm.nih.gov/pubmed/1733640

Note : You can read the full article here: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1554231/

 

Hypothesis: cytokines may be activated to cause depressive illness and chronic fatigue syndrome

Abstract:

Abnormalities in the regulation of the hypothalamo-pituitary-adrenal (HPA) axis are a well recognised feature of endogenous depression. The mechanism underlying this phenomenon remains obscure although there is strong evidence suggesting excessive CRH activity at the level of the hypothalamus.

We propose a novel hypothesis in which we suggest that the aetiological antecent to CRH hyperactivity is cytokine activation in the brain. It is now well established both that interleukins -1 and -6 are produced in a number of central loci and that cytokines are potent stimulators of the HPA axis.

Hence, we suggest that activation of IL-1 and IL-6 by specific mechanisms (such as neurotropic viral infection) in combination with the consequent CRH-41 stimulation, may (via their known biological effects) underly many of the features found in major depression and other related disorders, particularly where chronic fatigue is a prominent part of the symptom complex.

This theory has considerable heuristic value and suggests a number of experimental stratagems which may employed in order to confirm or reject it.

 

Source: Ur E, White PD, Grossman A. Hypothesis: cytokines may be activated to cause depressive illness and chronic fatigue syndrome. Eur Arch Psychiatry Clin Neurosci. 1992;241(5):317-22. http://www.ncbi.nlm.nih.gov/pubmed/1606197

 

Chronic fatigue syndrome and women: can therapy help?

Abstract:

This article presents current research on chronic fatigue syndrome, which currently afflicts mostly females between the ages of 25 and 55. Because depression is a common symptom of chronic fatigue syndrome, mental health practitioners are often involved with the victims and must formulate an appropriate treatment strategy that considers the physiological, intrapsychic, interpersonal, and environmental aspects of the client. This article includes case material focusing on a woman who was medically diagnosed with the Epstein-Barr virus and was in psychotherapy with the author. The difficulty of managing the interplay of the real health problems and the emotional issues presented by the client is highlighted.

Comment in:

“Chronic fatigue syndrome and women: can therapy help?”. [Soc Work. 1992]

“Chronic fatigue syndrome and women: can therapy help?”. [Soc Work. 1992]

“Chronic fatigue syndrome and women: can therapy help?”. [Soc Work. 1992]

Source: Burke SG. Chronic fatigue syndrome and women: can therapy help? Soc Work. 1992 Jan;37(1):35-9.  http://www.ncbi.nlm.nih.gov/pubmed/1542805

 

The pathophysiology of chronic fatigue syndrome: confirmations, contradictions, and conjectures

Abstract:

OBJECTIVE: To examine published data regarding patient cohorts with the recently defined chronic fatigue syndrome.

METHOD: Review of thirty-two peer-assessed research publications that included full disclosure of the methodology employed; classification of the findings as confirmed, contradictory, or non-duplicated.

RESULTS: Research studies have confirmed that the majority of patients with the chronic fatigue syndrome: 1) are white middle-aged women, 2) have a high prevalence of current major depression and somatization disorder, 3) have abnormal personality traits, 4) believe that their fatigue has a physical cause, and 5) show mild abnormalities of humoral immunity. Contradictory data have been presented with regard to: 1) the time of onset of depressive disorders, 2) the etiologic role of herpetic and enteroviral infections, 3) the presence of abnormal cellular immunity, and 4) the clinical utility of immunoglobulin therapy. Non-duplicated research has indicated 1) hypothalamic-pituitary-adrenal axis dysfunction, 2) abnormalities on magnetic resonance images of the brain, 3) altered cytokine production, and 4) the possibility of retroviral infection.

CONCLUSIONS: As presently defined, the chronic fatigue syndrome has many of the clinical and biological features associated with depressive and somatoform disorders. A specific etiologic role for infections or immune dysfunction has not been confirmed.

 

Source: Manu P, Lane TJ, Matthews DA. The pathophysiology of chronic fatigue syndrome: confirmations, contradictions, and conjectures. Int J Psychiatry Med. 1992;22(4):397-408. http://www.ncbi.nlm.nih.gov/pubmed/1338059

 

Chronic fatigue syndrome

Comment on:

Antidepressant therapy in the chronic fatigue syndrome. [Br J Gen Pract. 1991]

General practitioners’ experience of the chronic fatigue syndrome. [Br J Gen Pract. 1991]

 

Sir, I read with interest the papers on the chronic fatigue syndrome (August Journal, p.324, 339). This syndrome has become an important diagnosis in both general practice and psychiatry. With the awareness of such a diagnostic entity, more patients are being recognized and managed (although the aetiology still remains unknown).

Depression as an inherent feature of chronic fatigue syndrome remains a controversial issue and great care is needed in treating these patients as ‘depressed’. Subjectively, many patients with the chronic fatigue syndrome describe their mood state as depressed, probably because of lack of any other socially approved metaphor. For a practitioner, however, it is important to make an objective assessment about the significance of this expression in terms of the range and reactivity of affect and the disproportion of depressive presentation in the context of the patient’s life situation and experiences. If depression is significant, the diagnosis of chronic fatigue syndrome becomes secondary to that of depressive disorder as fatigue may be a feature of depression. However, if chronic fatigue syndrome remains the primary diagnosis, one must remember that antidepressant drugs are neither euphoriants nor stimulants and that there is no empirical evidence for the benefit of antidepressant treatment in this syndrome, although there is a recommendation for it to be tried as an alternatp mode of treatment.

 

Source: Arya DK. Chronic fatigue syndrome. Br J Gen Pract. 1991 Nov;41(352):480. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1371803/

 

Seasonal affective disorder presenting as chronic fatigue syndrome

Abstract:

Although operational criteria have been recently proposed to better define chronic fatigue syndrome (CFS), it remains a controversial diagnosis. There are many overlapping symptoms between CFS and major depression. The author presents two patients with seasonal affective disorder, who responded to phototherapy and had previously been diagnosed as CFS. Because of the consequences of treatment, seasonal and non seasonal depression need to be ruled out in patients with chronic fatigue symptoms.

 

Source: Lam RW. Seasonal affective disorder presenting as chronic fatigue syndrome. Can J Psychiatry. 1991 Nov;36(9):680-2. http://www.ncbi.nlm.nih.gov/pubmed/1773405

 

Intense fatigue in humans. Psychosocial and cultural aspects

Abstract:

A differentiation between the normal sensation of tiredness and the symptom “fatigue” is often difficult. Both are influenced by cultural, social, psychological and biological factors, which can lead–interactively–to symptom formation. Psychiatric disorders frequently associated with fatigue are all forms of depression, somatization and anxiety disorders, chronic pain states and drug abuse among many others. In at least 2/3 of patients with the fashionable chronic fatigue syndrome–formerly called neurasthenia–a psychiatric diagnosis can be made, most of them also suffer from many symptoms attributes to the autonomous nervous system. The clinical approach should be cautious avoiding diagnostic and therapeutic overaction and therapy should emerge from a diagnosis properly assessed.

 

Source: Radvila A. Intense fatigue in humans. Psychosocial and cultural aspects. Ther Umsch. 1991 Nov;48(11):756-61. [Article in German] http://www.ncbi.nlm.nih.gov/pubmed/1754973

 

Depression and somatization in the chronic fatigue syndrome

Abstract:

PURPOSE: To report the prevalence, clinical features, and diagnostic associations of the proposed chronic fatigue syndrome (CFS) in a cohort of patients with chronic fatigue and to assess the usefulness of a structured psychiatric interview for detecting previously unrecognized psychiatric morbidity in patients with CFS.

PATIENTS AND METHODS: A consecutive sample of 200 adult patients with a chief complaint of chronic fatigue was prospectively evaluated in a referral-based clinic within a university general medicine practice. All patients received a thorough medical history, physical examination, diagnostic laboratory testing, and portions of the Diagnostic Interview Schedule, version III-A. The criteria for CFS were applied, and patients with CFS were compared with matched control subjects from the inception cohort.

RESULTS: The 60 patients with CFS had similar likelihoods of current psychiatric disorders (78% versus 82%), active mood disorders (73% versus 77%), and preexisting psychiatric disorders (42% versus 43%) when compared with fatigued control subjects. Patients with CFS were more likely to have somatization disorder (p less than 0.001) and to attribute their illness to a physical cause (p less than 0.005) than fatigued controls. Patients with CFS also displayed functional symptoms, often lifelong, which are not part of the case definition of CFS. Depressive features in patients with CFS were similar to those of control subjects, but a trend toward suicidal behavior was noted.

CONCLUSIONS: Patients with CFS have a high prevalence of unrecognized, current psychiatric disorders, which often predate their fatigue syndrome. Assessment of patients with CFS should include a structured psychiatric evaluation.

 

Comment in:

Chronic fatigue syndrome and psychiatric disorders. [Am J Med. 1992]

Chronic fatigue syndrome (CFS) and psychiatric disorders. [Am J Med. 1994]

 

Source: Lane TJ, Manu P, Matthews DA. Depression and somatization in the chronic fatigue syndrome. Am J Med. 1991 Oct;91(4):335-44. http://www.ncbi.nlm.nih.gov/pubmed/1951377

 

An overview of chronic fatigue syndrome

Abstract:

BACKGROUND: Psychological and immunologic factors both appear to contribute to chronic fatigue syndrome (CFS). By comparing CFS with other disorders in which fatigue is a prominent symptom, the association between fatigue, psychological vulnerability, depression, and immune function may be further defined. Recent data from psychological, neurologic, and immunologic studies that address these issues are reviewed.

METHOD: Articles and abstracts covering CFS and related topics of fatigue, depression, and postinfectious syndromes were identified through MEDLINE and Index Medicus (1980-1990) and by bibliographic review of pertinent review articles.

RESULTS: The 1988 definition of CFS by the Centers for Disease Control encompasses several conditions in which the major characteristic is severe fatigue associated with constitutional symptoms. Several studies have identified immune dysfunction in CFS patients, but the specificity of these findings remains unclear. Most studies have shown that CFS patients, compared with other patients with chronic medical illness, experience more disabling fatigue. Some investigators have found a higher incidence of concurrent and past psychiatric illness in CFS patients compared with other medical patients, thereby suggesting an underlying psychopathology in CFS. However, other studies have not found a higher than expected incidence of past depression in CFS patients and have further shown that many CFS patients have no identifiable psychopathology.

CONCLUSION: CFS appears to be a heterogenous entity. Although there may be a high coincidence of major depression in CFS, a substantial proportion of patients lack any identifiable DSM-III-R psychiatric disorder yet still manifest the syndrome, thereby suggesting it has an autonomous entity. Despite the evolving nature of our current understanding of CFS, a rational diagnostic and therapeutic approach to CFS is possible.

 

Comment in: Pathogenesis of chronic fatigue syndrome. [J Clin Psychiatry. 1992]

 

Source: Krupp LB, Mendelson WB, Friedman R. An overview of chronic fatigue syndrome. J Clin Psychiatry. 1991 Oct;52(10):403-10. http://www.ncbi.nlm.nih.gov/pubmed/1938975

 

Post-viral fatigue syndrome. Epidemiology: lessons from the past

Abstract:

This chapter outlines the recorded epidemiological history of PVFS (including the early epidemics of myalgic encephalomyelitis) and the development of the concept, including the realisation that endemic cases also occur.

Cases of PVFS are still not recorded by the Surveillance Centre for Communicable Diseases, so it is very difficult to detect and monitor any outbreak in the community, since each GP may only have two or three such patients and would, therefore, not be aware of an epidemic in the community as a whole if it occurred.

Epidemiological issues raised by the early epidemics, including the delineation of the syndrome, the question of bias, the role of hysteria and the role of depression; the issue of symptom distribution, and its implications for aetiology; and a multiaxial framework for understanding the association with psychological symptoms are discussed. The value of a future multidisciplinary research programme designed to disentangle direct and predisposing causes of PVFS is emphasised.

 

Source: Jenkins R. Post-viral fatigue syndrome. Epidemiology: lessons from the past. Br Med Bull. 1991 Oct;47(4):952-65. http://www.ncbi.nlm.nih.gov/pubmed/1794093