ME/CFS Evidence Browser — Classified Studies on Myalgic Encephalomyelitis

2807 studies

1841–1860 of 2,807 studies

E2 ModerateCohortPEM not requiredCross-Sectional

Sympathetic cardiovascular control during orthostatic stress and isometric exercise in adolescent chronic fatigue syndrome.

Wyller, Vegard Bruun, Saul, J Philip, Walløe, Lars et al.·European journal of applied physiology·2008

This study looked at how the bodies of adolescents with ME/CFS respond to physical stress, specifically when lying down while pressure is applied to the legs and while squeezing a hand grip. Researchers found that ME/CFS patients had higher heart rates and stress hormone levels even at rest, and their cardiovascular system overreacted to the leg pressure test but underreacted during the hand grip exercise compared to healthy teenagers.

Autonomic Nervous System

E2 ModerateBehavioralPEM not requiredLongitudinal

Catastrophizing and causal beliefs in whiplash.

Buitenhuis, J, de Jong, P J, Jaspers, J P C et al.·Spine·2008

This study looked at how people's thoughts and beliefs affect recovery from neck injuries caused by car accidents. Researchers found that people who catastrophize (expect the worst) about their pain and who believe their symptoms are caused by 'whiplash' tend to have longer-lasting problems, even when their initial injury was not severe. The study followed 140 people for a year after their accidents to see how their beliefs influenced their recovery.

E2 ModerateBehavioralPEM not requiredLongitudinal

Physical health 25 years later: the predictive ability of neuroticism.

Charles, Susan Turk, Gatz, Margaret, Kato, Kenji et al.·Health psychology : official journal of the Division of Health Psychology, American Psychological Association·2008

This study followed over 21,000 people for 25 years to see if personality traits measured in 1973 could predict physical health problems in 1998–2002. The researchers found that people who scored higher on neuroticism—a trait involving worry, emotional sensitivity, and stress—were more likely to report having chronic conditions, including chronic fatigue syndrome. However, when family history was considered, some of these connections weakened, suggesting that genetics may partly explain why certain personality traits and health problems run in families.

E2 ModerateCohortPEM not requiredCross-Sectional

An IgM-mediated immune response directed against nitro-bovine serum albumin (nitro-BSA) in chronic fatigue syndrome (CFS) and major depression: evidence that nitrosative stress is another factor underpinning the comorbidity between major depression and CFS.

Maes, Michael, Mihaylova, Ivana, Kubera, Marta et al.·Neuro endocrinology letters·2008

This study looked for signs of damage from harmful molecules called nitrosative stress in people with ME/CFS and depression. Researchers found that people with ME/CFS and depression had higher levels of immune antibodies (IgM) attacking damaged proteins, suggesting their bodies are being harmed by these harmful molecules more than healthy people. The study also found a connection between this damage and leaky gut, where bacteria products leak through the intestinal barrier.

Immune System

E2 ModerateCohortPEM not requiredCase-Control

Genetic evaluation of the serotonergic system in chronic fatigue syndrome.

Smith, Alicia K, Dimulescu, Irina, Falkenberg, Virginia R et al.·Psychoneuroendocrinology·2008

This study looked at genes related to serotonin (a brain chemical) to see if certain genetic variations are more common in people with ME/CFS. Researchers compared 40 ME/CFS patients with 97 control subjects and found that specific genetic markers in the HTR2A gene were associated with ME/CFS and with severity of fatigue and disability. These genetic variations may increase how active the serotonin system is in the brain, which could play a role in ME/CFS.

E2 ModerateCohortPEM not requiredCase-Control

Combined dexamethasone/corticotropin-releasing factor test in chronic fatigue syndrome.

Van Den Eede, F, Moorkens, G, Hulstijn, W et al.·Psychological medicine·2008

This study tested how well the stress-response system (HPA axis) works in ME/CFS patients compared to healthy people. Researchers gave patients a special test involving two hormones and measured cortisol levels in saliva. They found that ME/CFS patients had lower cortisol responses than healthy controls, suggesting their stress-response system may not be working properly—but this was especially true for patients without a history of childhood trauma.

Endocrine Disruption

E2 ModerateCohortPEM not requiredCross-Sectional

Seroprevalence of antibodies to Coxiella burnetii among employees of the Veterinary University in Kosice, eastern Slovakia.

Dorko, Erik, Kalinova, Zuzana, Weissova, Tatiana et al.·Annals of agricultural and environmental medicine : AAEM·2008

This study tested veterinary university employees in Slovakia for past or present infection with a bacteria called Coxiella burnetii, which causes Q fever—a disease spread mainly through contact with infected animals or their fluids. Researchers found that more than one-third of the employees had antibodies (immune markers) suggesting exposure to this bacteria, and some employees reported having chronic fatigue syndrome, fever of unknown origin, and other unexplained health problems.

E2 ModerateBehavioralPEM not requiredCross-Sectional

'Physical or psychological?'- a comparative study of causal attribution for chronic fatigue in Brazilian and British primary care patients.

Cho, H J, Bhugra, D, Wessely, S·Acta psychiatrica Scandinavica·2008

This study compared how patients with long-term unexplained fatigue in Brazil and Britain understand what caused their illness. British patients were more likely to believe their fatigue had a physical cause, while both groups experienced similar levels of disability despite their different beliefs about its origin. The findings suggest that culture and society influence how people understand and talk about their chronic fatigue.

E2 ModerateCohortPEM unclearCross-Sectional

Negotiating the diagnostic uncertainty of contested illnesses: physician practices and paradigms.

Swoboda, Debra A·Health (London, England : 1997)·2008

This study surveyed 800 U.S. doctors to understand how they diagnose ME/CFS and similar illnesses that lack clear lab tests or agreed-upon causes. Researchers found that many doctors do diagnose these conditions, even without complete scientific consensus, by using practical strategies like consulting expert resources, ordering specific tests, and considering how the body might be affected. The study shows that doctors can rationally diagnose ME/CFS by using thoughtful decision-making processes, and that patients may benefit from seeing doctors who use these careful diagnostic approaches.

Diagnostics

E2 ModerateCohortPEM unclearCross-Sectional

Electrocardiographic QT interval and cardiovascular reactivity in fibromyalgia differ from chronic fatigue syndrome.

Naschitz, Jochanan E, Slobodin, Gleb, Sharif, Dauod et al.·European journal of internal medicine·2008

This study found that ME/CFS and fibromyalgia, two conditions that seem similar on the surface, actually show different patterns on heart tests. People with ME/CFS had shorter QT intervals on their electrocardiogram (a measure of heart electrical activity) and had more dramatic blood pressure and heart rate changes during a tilting test compared to people with fibromyalgia. These differences suggest the two conditions may be distinct disorders rather than variants of the same illness.

Autonomic Nervous System

E2 ModerateCohortPEM not requiredCross-Sectional

Memory for fatigue in chronic fatigue syndrome: the relation between weekly recall and momentary ratings.

Friedberg, Fred, Sohl, Stephanie J·International journal of behavioral medicine·2008

This study looked at how people with ME/CFS remember their fatigue levels compared to what they report in the moment. Over three weeks, 71 participants rated their fatigue six times daily using electronic diaries, then recalled their fatigue levels at the end of each week. The researchers found that people's weekly memories of fatigue were higher than their day-to-day ratings, but the two measures still matched moderately well overall.

E2 ModerateCohortPEM not requiredLongitudinal

Glucocorticoid sensitivity of immune cells in severely fatigued adolescent girls: a longitudinal study.

ter Wolbeek, Maike, van Doornen, Lorenz J P, Schedlowski, Manfred et al.·Psychoneuroendocrinology·2008

This study looked at whether teenagers with severe fatigue have differences in how their immune cells respond to stress hormones called cortisol and dexamethasone. Researchers tracked 65 fatigued girls and 60 non-fatigued girls over a year, measuring their stress hormone levels and testing immune cell responses. They found that only girls whose fatigue persisted had reduced immune cell sensitivity to these stress hormones, suggesting that long-lasting fatigue may involve a specific change in how the immune system responds to stress.

Immune System

E2 ModerateCohortPEM unclearObservational

Measuring health outcomes of a multidisciplinary care approach in individuals with chronic environmental conditions using an abbreviated symptoms questionnaire.

Fox, Roy, Sampalli, Tara, Fox, Jonathan·Journal of multidisciplinary healthcare·2008

This study looked at how well a multidisciplinary treatment program (combining different types of care) worked for people with multiple chemical sensitivity and related conditions like ME/CFS. Researchers tracked 292 patients over time and used a symptom questionnaire to measure improvement. They found that some symptoms like difficulty concentrating and tiredness improved quickly (within 6 months), while others like fatigue took longer to improve.

Cognitive Impairment

E2 ModerateCohortPEM not requiredObservational

Alterations in diurnal salivary cortisol rhythm in a population-based sample of cases with chronic fatigue syndrome.

Nater, Urs M, Youngblood, Laura Solomon, Jones, James F et al.·Psychosomatic medicine·2008

This study measured stress hormone (cortisol) levels and immune markers in saliva and blood from people with ME/CFS, people with significant fatigue who don't meet full CFS criteria, and healthy controls. People with ME/CFS showed an abnormal pattern: lower cortisol in the morning and higher in the evening (the opposite of what's healthy), suggesting their stress-response system may not be working normally.

Immune System

E2 ModerateCohortPEM unclearObservational

The economic impact of ME/CFS: individual and societal costs.

Jason, Leonard A, Benton, Mary C, Valentine, Lisa et al.·Dynamic medicine : DM·2008

This study looked at how much money ME/CFS costs both individual patients and society as a whole in the United States. Researchers examined medical bills, test costs, and medication expenses for ME/CFS patients in two different groups. They found that ME/CFS is very expensive—costing between $2,000 and $8,600 per patient per year in direct medical costs alone, and billions of dollars to society when you include lost work and productivity.

E2 ModerateCohortPEM not requiredObservational

Chronic fatigue syndrome is associated with chronic enterovirus infection of the stomach.

Chia, J K S, Chia, A Y·Journal of clinical pathology·2008

This study examined stomach biopsies from 165 ME/CFS patients to look for enterovirus (a type of virus) because many patients report stomach problems. Researchers found that 82% of ME/CFS patients had signs of enterovirus in their stomach cells, compared to only 20% of healthy control patients. Some patients tested positive for the virus years apart, suggesting a persistent infection rather than a one-time illness.

E2 ModerateBehavioralPEM not requiredObservational

Implementing cognitive behavior therapy for chronic fatigue syndrome in mental health care: a costs and outcomes analysis.

Scheeres, Korine, Wensing, Michel, Bleijenberg, Gijs et al.·BMC health services research·2008

This study tested whether cognitive behavior therapy (CBT), a talk-based treatment, could be successfully offered to ME/CFS patients at a mental health center and whether it was worth the cost. Researchers tracked 125 patients before and after treatment and found that 37% recovered from CFS, patients' healthcare costs went down, and overall costs to society were lower. The study suggests that offering CBT for ME/CFS in mental health settings could be both helpful and financially reasonable.

Interventions

E2 ModerateBehavioralPEM not requiredLongitudinal

A longitudinal study of the relationship between psychological distress and recurrence of upper respiratory tract infections in chronic fatigue syndrome.

Faulkner, Susan, Smith, Andrew·British journal of health psychology·2008

This study tracked 21 ME/CFS patients and 18 healthy people over 15 weeks to see if stress affects how often they catch colds and respiratory infections. ME/CFS patients caught infections much more frequently than healthy people, and importantly, high stress levels in one week predicted who would get sick the next week. The same stress also made their fatigue symptoms worse.

Immune System

E2 ModerateBehavioralPEM not requiredCross-Sectional

Functional incapacity and physical and psychological symptoms: how they interconnect in chronic fatigue syndrome.

Priebe, Stefan, Fakhoury, Walid K H, Henningsen, Peter·Psychopathology·2008

This study asked whether the difficulty ME/CFS patients have doing daily activities is mainly caused by physical symptoms rather than emotional or psychological problems. Researchers surveyed 73 ME/CFS patients and analyzed their responses using statistical methods. They found that physical symptoms and loss of functioning clustered together as one main problem, while psychological symptoms formed a separate group, suggesting that the loss of ability to function is a core feature of ME/CFS driven primarily by physical symptoms.

E2 ModerateCohortPEM not requiredCross-Sectional

Sexual dysfunction as related to severity of fatigue in women with CFS.

Blazquez, A, Ruiz, E, Vazquez, A et al.·Journal of sex & marital therapy·2008

This study looked at whether sexual function problems are connected to fatigue severity in women with ME/CFS. Researchers compared 27 women with ME/CFS to 15 healthy women and used questionnaires to measure sexual satisfaction, interest, and comfort. They found that women with more severe fatigue reported more sexual problems, including less satisfaction, avoiding sexual activity, and viewing sex negatively.

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Sympathetic cardiovascular control during orthostatic stress and isometric exercise in adolescent chronic fatigue syndrome.

Catastrophizing and causal beliefs in whiplash.

Physical health 25 years later: the predictive ability of neuroticism.

An IgM-mediated immune response directed against nitro-bovine serum albumin (nitro-BSA) in chronic fatigue syndrome (CFS) and major depression: evidence that nitrosative stress is another factor underpinning the comorbidity between major depression and CFS.

Genetic evaluation of the serotonergic system in chronic fatigue syndrome.

Combined dexamethasone/corticotropin-releasing factor test in chronic fatigue syndrome.

Seroprevalence of antibodies to Coxiella burnetii among employees of the Veterinary University in Kosice, eastern Slovakia.

'Physical or psychological?'- a comparative study of causal attribution for chronic fatigue in Brazilian and British primary care patients.

Negotiating the diagnostic uncertainty of contested illnesses: physician practices and paradigms.

Electrocardiographic QT interval and cardiovascular reactivity in fibromyalgia differ from chronic fatigue syndrome.

Memory for fatigue in chronic fatigue syndrome: the relation between weekly recall and momentary ratings.

Glucocorticoid sensitivity of immune cells in severely fatigued adolescent girls: a longitudinal study.

Measuring health outcomes of a multidisciplinary care approach in individuals with chronic environmental conditions using an abbreviated symptoms questionnaire.

Alterations in diurnal salivary cortisol rhythm in a population-based sample of cases with chronic fatigue syndrome.

The economic impact of ME/CFS: individual and societal costs.

Chronic fatigue syndrome is associated with chronic enterovirus infection of the stomach.

Implementing cognitive behavior therapy for chronic fatigue syndrome in mental health care: a costs and outcomes analysis.

A longitudinal study of the relationship between psychological distress and recurrence of upper respiratory tract infections in chronic fatigue syndrome.

Functional incapacity and physical and psychological symptoms: how they interconnect in chronic fatigue syndrome.

Sexual dysfunction as related to severity of fatigue in women with CFS.

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