Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0015674 (chronic fatigue syndrome)
 2,978 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

In this editorial the dominant sites of organ manifestations in hereditary haemochromatosis are discussed as well as conditions that can occur as a result of iron-mediated manifestations: liver disease, diabetes mellitus, arthritis, and cardiomyopathy. The incidences of these organ manifestations and their well-known typical symptomatology are mentioned, in order to investigate hereditary haemochromatosis as a possible (missed?) cause of the chronic fatigue syndrome. In particular the limitations of most studies about the prevalence of hereditary haemochromatosis in patients with the chronic fatigue syndrome are clearly summarised.
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PMID:Prevention of organ failure in hereditary haemochromatosis. 1268 90

In addition to chronic hepatitis, many individuals infected with hepatitis C virus (HCV) suffer from fatigue, which may compromise their health-related quality of life (HRQL). To assess systematically health-related quality of life (HRQL) in patients with chronic hepatitis C and to determine if any clinical, biochemical, virologic, demographic, and histologic features are associated with HRQL status. In this cross-sectional observational study, one hundred thirty patients with chronic HCV infection (HCV RNA positive by PCR) and 61 healthy controls were enrolled from a tertiary care teaching medical center. All patients and controls completed one generic HRQL questionnaire (MOS SF-36) and one liver-disease specific instrument (Chronic Liver Disease Questionnaire, CLDQ). Ninety-five HCV patients and all the controls also completed a fatigue questionnaire (Chronic Fatigue Screener, CFS) and had immunologic markers determined (Cryoglobulin, Soluble IL-2 receptors, Rheumatoid Factor). We compared the HRQL of HCV-infected patients to the controls and, using data from other studies, to the general population, patients with diabetes, and patients with chronic low back pain. Patients with chronic HCV had greater HRQL impairment than healthy controls and those with type II diabetes. Fatigue was the most important symptom with negative impact on HRQL. Sixty-one percent of HCV-infected patients reported fatigue-related loss of activity. Additionally, other factors associated with HRQL were gender and histologic cirrhosis. Chronic HCV infection has a profound negative impact on patients' HRQL. Disabling fatigue is the most important factor that contributes to loss of well-being in this relatively young group of patients.
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PMID:Fatigue and health-related quality of life (HRQL) in chronic hepatitis C virus infection. 1740 28

Fatigue is a common debilitating complication of primary biliary cirrhosis (PBC), the pathophysiologic mechanism of which is poorly understood. Recently, the neuroactive steroid dehydroepinadrosterone sulfate (DHEAS) was reported to be implicated in Chronic Fatigue Syndrome in the absence of liver disease. The present study was undertaken to analyse fatigue scores and their relationship with disease severity and circulating levels of DHEAS as well as its precursors DHEA and pregnenolone in PBC patients with (n=15) or without fatigue (n=10) compared to control subjects (n=11). Fatigue was assessed using the fatigue impact scale (FIS) including cognitive, physical and psychosocial subclasses. Steroids were measured by radioimmunoassay or gas chromatography/mass spectrometry. Plasma concentrations of DHEAS were significantly reduced in PBC patients with fatigue as compared to controls, while those of its precursors DHEA and pregnenolone remained within the control range. Plasma levels of DHEAS in PBC patients were significantly correlated with fatigue severity as reflected by total FIS scores including total (rp=-0.42; p=0.018), as well as the cognitive (rp=-0.37; p=0.03), physical (rp=-0.48; p=0.006) and psychosocial (rp=-0.35; p=0.04) subclasses of fatigue scores. No correlation of fatigue scores was observed with indices of liver function. These findings suggest that reduced levels of the neurosteroid DHEAS may contribute to fatigue in patients with PBC; substitutive therapy using DHEAS or its precursor DHEA could be beneficial in the management of fatigue in patients with low levels of DHEAS.
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PMID:Reduced plasma dehydroepiandrosterone sulfate levels are significantly correlated with fatigue severity in patients with primary biliary cirrhosis. 1766 54

Chronic hepatitis C virus (HCV) viremia has been known to provoke a plethora of autoimmune syndromes referred to as extrahepatic manifestations of chronic HCV infection. Aim of the current study was to assess the prevalence of rheumatologic manifestations among Egyptians with hepatitis C infection and its' association with cryoglobulin profile. The current research represents a cross-sectional study where patients with chronic HCV infection attending the outpatient clinic of the National Hepatology and Tropical Medicine Research Institute over a period of 1 year were interviewed. Patients with decompensated liver disease, on interferon therapy, having end-stage renal disease or coexisting viral infection like hepatitis B surface antibody positive patients were all excluded from the research. Laboratory investigations as well as serological assay including cryoglobulin profile, rheumatoid factor, antinuclear antibody, HCV-PCR were performed. Three hundred and six patients having chronic HCV infection were interviewed in this research. The overall estimated prevalence of rheumatologic manifestations in the current research was 16.39%, chronic fatigue syndrome 9.5%, sicca symptoms 8.8%, arthralgia 6.5%, fibromyalgia 1.9%, myalgia 1.3%, arthritis 0.7%, cryoglobulinemic vasculitis 0.7%, autoimmune hemolytic anemia 0.7%, thrombocytopenia 0.7%. Xerophthalmia was significantly present in male population (p = 0.04), whereas fibromyalgia, cryoglobulinemic vasculitis, arthritis, and autoimmune hemolytic anemia were significantly present in female population under study (p < 0.05). In chronic HCV genotype 4 infection, the prevalence of rheumatologic manifestations was 16.3% with chronic fatigue syndrome and sicca symptoms being the most common with no significant correlation to the degree of elevation of liver disease or viral load.
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PMID:Prevalence of rheumatologic manifestations of chronic hepatitis C virus infection among Egyptians. 2041 Dec 90