ME/CFS Evidence Browser — Classified Studies on Myalgic Encephalomyelitis

2807 studies

561–580 of 2,807 studies

E2 ModerateCohortPEM unclearCross-Sectional

Impact of myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) on the quality of life of people with ME/CFS and their partners and family members: an online cross-sectional survey.

Vyas, Jui, Muirhead, Nina, Singh, Ravinder et al.·BMJ open·2022

This large international study surveyed 1,418 people with ME/CFS and their family members to understand how the illness affects quality of life for both patients and loved ones. People with ME/CFS reported very low health status (averaging 34 out of 100) with major difficulties in daily activities, pain, and movement, while their family members experienced significant emotional distress including worry, frustration, and sadness, plus practical impacts on family life and finances. The study found that the worse a patient's quality of life is, the worse their family member's quality of life tends to be as well.

E2 ModerateCohortPEM not requiredLongitudinal

Impact of a mid-urethral synthetic mesh sling on long-term risk of systemic conditions in women with stress urinary incontinence: a national cohort study.

Muller, P, Gurol-Urganci, I, Thakar, R et al.·BJOG : an international journal of obstetrics and gynaecology·2022

This study looked at whether a surgical mesh implant used to treat urinary leakage in women increases the risk of developing systemic diseases like autoimmune conditions, fibromyalgia, or ME/CFS. Researchers compared nearly 89,000 women who received mesh surgery to about 3,400 women who had surgery without mesh, following them for up to 10 years. The study found no evidence that mesh surgery increased the risk of these systemic conditions.

E2 ModerateCohortPEM unclearCase-Control

Revisiting IgG Antibody Reactivity to Epstein-Barr Virus in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome and Its Potential Application to Disease Diagnosis.

Sepúlveda, Nuno, Malato, João, Sotzny, Franziska et al.·Frontiers in medicine·2022

This study looked at antibody responses to Epstein-Barr virus (EBV), a common virus linked to ME/CFS onset in some patients. Researchers analyzed blood samples from 92 ME/CFS patients and 50 healthy people, testing reactions to over 3,000 EBV proteins. They found that in patients whose ME/CFS started after a suspected EBV infection, two specific viral proteins triggered stronger antibody responses than in healthy controls. These antibody patterns could correctly identify about 83% of infected patients and 72% of healthy people, suggesting they might become useful diagnostic markers.

BiomarkersImmune System

E2 ModerateCohortPEM not required

Metabolomic Evidence for Peroxisomal Dysfunction in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome.

Che, Xiaoyu, Brydges, Christopher R, Yu, Yuanzhi et al.·International journal of molecular sciences·2022

Researchers found that people with ME/CFS have abnormal levels of certain fats and chemicals in their blood compared to healthy people. Specifically, they had lower levels of protective fats called plasmalogens and phospholipids, but higher levels of compounds called dicarboxylic acids. These chemical differences were so distinctive that a computer program could identify ME/CFS patients from their blood work with reasonable accuracy.

Biomarkers

E2 ModerateCohortPEM not requiredObservational

Genetic association study in myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) identifies several potential risk loci.

Hajdarevic, Riad, Lande, Asgeir, Mehlsen, Jesper et al.·Brain, behavior, and immunity·2022

Researchers studied the genes of nearly 3,000 ME/CFS patients from Norway, Denmark, and the UK to find genetic factors that might increase the risk of developing the disease. While they found some interesting patterns in a gene called TPPP that appeared in multiple study groups, none of the findings were strong enough to definitively prove they cause ME/CFS. This study is the largest genetic search for ME/CFS risk factors conducted so far, but more research with even larger groups of patients will be needed to find reliable genetic clues.

E2 ModerateDiagnosticPEM unclearMethods-Paper

Comparing Operationalized Approaches for Substantial Reduction of Functioning in Chronic Fatigue Syndrome and Myalgic Encephalomyelitis.

Wiedbusch, Elzbieta, Jason, Leonard A·Archives of community medicine·2022

This study looked at five different ways to measure how much ME/CFS reduces a person's ability to function in daily life—something that is a key part of diagnosis. Using a large international group of over 2,300 patients and 359 healthy controls, researchers found that all five methods worked reasonably well, but a simple single-question approach was the best at identifying who actually had ME/CFS. This suggests doctors could use an easier, faster method to assess this important symptom.

Diagnostics

E2 ModerateCohortPEM unclearCross-Sectional

Dysregulated autoantibodies targeting vaso- and immunoregulatory receptors in Post COVID Syndrome correlate with symptom severity.

Sotzny, Franziska, Filgueiras, Igor Salerno, Kedor, Claudia et al.·Frontiers in immunology·2022

This study looked at whether certain antibodies in the blood—proteins the immune system makes that sometimes attack the body's own tissues—might explain why some people with long COVID develop ME/CFS symptoms like severe fatigue and blood flow problems. Researchers compared antibody levels in 80 patients with long COVID (40 with ME/CFS) against healthy people and found that patients had different patterns of these antibodies, particularly ones affecting blood vessels and the nervous system. The severity of fatigue and blood pressure/temperature regulation problems seemed connected to lower levels of a specific antibody (ADRB2), suggesting the immune system's dysregulation may play a role in these symptoms.

Immune System

E2 ModerateCohortPEM not requiredObservational

Neurological Involvement in COVID-19 Among Non-Hospitalized Adolescents and Young Adults.

Havdal, Lise Beier, Berven, Lise Lund, Selvakumar, Joel et al.·Frontiers in neurology·2022

This study looked at young people (ages 12-25) who had COVID-19 but were not hospitalized, comparing them to people who didn't have COVID-19. Researchers found that COVID-19 patients reported more fatigue and post-exertional malaise (PEM)—a worsening of symptoms after physical activity—and had slightly elevated markers of brain injury in their blood. However, their thinking and memory abilities tested normally, and the blood markers didn't directly correlate with their symptoms.

Post-Exertional Malaise

E2 ModerateCohortPEM unclearCross-Sectional

Autoimmune gene expression profiling of fingerstick whole blood in Chronic Fatigue Syndrome.

Wang, Zheng, Waldman, Michelle F, Basavanhally, Tara J et al.·Journal of translational medicine·2022

Researchers tested blood samples from 166 ME/CFS patients and 83 healthy people to look for immune system clues that might explain the disease. They found that six specific genes related to immune function were more active in patients with severe, bedridden ME/CFS compared to those with milder disease. The study suggests these genes could potentially be used as biomarkers to identify how severe someone's ME/CFS is and might point toward new treatments.

BiomarkersImmune System

E2 ModerateCohortPEM unclearCross-Sectional

The Presentation of Myalgic Encephalomyelitis/Chronic Fatigue Syndrome Is Not Influenced by the Presence or Absence of Joint Hypermobility.

Vogel, Sarah K, Primavera, Isabelle R, Marden, Colleen L et al.·The Journal of pediatrics·2022

This study looked at whether people with ME/CFS who have unusually flexible joints (joint hypermobility) experience the illness differently than those without this feature. Researchers compared 55 patients and found no meaningful differences between the two groups in terms of when symptoms started, how severe they were, or how much the condition affected their daily lives. Even though joint hypermobility may increase the risk of developing ME/CFS, having it does not appear to change how the illness presents or progresses.

E2 ModerateCohortPEM unclearCross-Sectional

Systemic antibody responses against human microbiota flagellins are overrepresented in chronic fatigue syndrome patients.

Vogl, Thomas, Kalka, Iris N, Klompus, Shelley et al.·Science advances·2022

Researchers found that people with severe ME/CFS have different immune responses against bacteria in their gut compared to healthy people. Specifically, their blood contains more antibodies (immune proteins) that target flagella, which are whip-like structures used by certain gut bacteria to move. This immune signature was so distinctive that a computer algorithm could use it to help identify ME/CFS patients.

Immune System

E2 ModerateCohortPEM unclearCase-Control

Psychogenic Pseudosyncope: Real or Imaginary? Results from a Case-Control Study in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) Patients.

van Campen, C Linda M C, Visser, Frans C·Medicina (Kaunas, Lithuania)·2022

Some ME/CFS patients experience frequent fainting or near-fainting spells and have been told these are psychological in origin. This study compared brain blood flow in ME/CFS patients with these spells to ME/CFS patients without them during a tilt test (where you're gradually tilted upright). The group with fainting spells showed a much larger drop in blood flow to the brain, suggesting their symptoms have a physical cause rather than a psychiatric one.

Autonomic Nervous System

E2 ModerateCohortPEM unclearLongitudinal

Physiological assessment of orthostatic intolerance in chronic fatigue syndrome.

Natelson, Benjamin H, Lin, Jin-Mann S, Blate, Michelle et al.·Journal of translational medicine·2022

This study tested how the bodies of ME/CFS patients respond when they shift from lying down to leaning upright for 10 minutes. Researchers measured heart rate, blood pressure, breathing, and carbon dioxide levels in the blood. They found that 60% of patients showed abnormal responses, with low blood carbon dioxide levels being the most common problem, followed by an excessively fast heartbeat when standing.

Autonomic Nervous System

E2 ModerateCohortPEM unclearCross-Sectional

The Relationship between Physical Activity and Long COVID: A Cross-Sectional Study.

Wright, Jack, Astill, Sarah L, Sivan, Manoj·International journal of environmental research and public health·2022

This study asked 477 people with Long COVID about their physical activity levels before and after illness, and how exercise affected their symptoms. Participants were much less active after getting Long COVID and needed more help with daily tasks. Most people (about 75%) reported that physical activity made their symptoms worse, while only about 1% said it improved them.

Post-Exertional Malaise

E2 ModerateCohortPEM unclearObservational

Epipharyngeal Abrasive Therapy (EAT) Has Potential as a Novel Method for Long COVID Treatment.

Imai, Kazuaki, Yamano, Takafumi, Nishi, Soichiro et al.·Viruses·2022

This study tested a Japanese treatment called epipharyngeal abrasive therapy (EAT) on 58 long COVID patients. The treatment involves applying zinc chloride to the back of the throat to reduce inflammation. Patients received weekly treatments for one month, and three common symptoms—fatigue, headaches, and difficulty concentrating—improved significantly after treatment.

Cognitive Impairment

E2 ModerateCohortPEM unclearObservational

Key Features of a Multi-Disciplinary Hospital-Based Rehabilitation Program for Children and Adolescents with Moderate to Severe Myalgic Encephalomyelitis/Chronic Fatigue Syndrome ME/CFS.

Hiremath, Sonya, Doukrou, Montserrat, Flannery, Halina et al.·International journal of environmental research and public health·2022

This study looked at 27 children and teenagers with moderate to severe ME/CFS who stayed in a hospital and received coordinated care from multiple medical professionals. Most patients (85%) showed improvement in at least one important area of their lives, such as being able to move around better, return to school, sleep better, or enjoy social activities. These results suggest that hospital-based rehabilitation programs can help young people with severe ME/CFS improve their quality of life.

Sleep

E2 ModerateCohortPEM unclearObservational

Oxaloacetate Treatment For Mental And Physical Fatigue In Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) and Long-COVID fatigue patients: a non-randomized controlled clinical trial.

Cash, Alan, Kaufman, David Lyons·Journal of translational medicine·2022

This study tested whether a supplement called oxaloacetate could help reduce fatigue in ME/CFS and Long COVID patients. Over 6 weeks, patients taking oxaloacetate showed significant improvements in both mental and physical fatigue—with ME/CFS patients improving by 22–33% depending on dose, and Long COVID patients improving by up to 47%—compared to expected placebo improvements of about 6%.

E2 ModerateCohortPEM not requiredCross-Sectional

Intersections between pneumonia, lowered oxygen saturation percentage and immune activation mediate depression, anxiety, and chronic fatigue syndrome-like symptoms due to COVID-19: A nomothetic network approach.

Al-Jassas, Hawraa Kadhem, Al-Hakeim, Hussein Kadhem, Maes, Michael·Journal of affective disorders·2022

This study examined 60 COVID-19 patients and 30 healthy controls to understand why some people develop depression, anxiety, and fatigue-like symptoms after COVID-19 infection. The researchers found that lung damage (seen on CT scans), low oxygen levels, and an overactive immune response are connected to these mental health and fatigue symptoms. Essentially, the physical damage to the lungs may trigger immune system activation, which then leads to depression, anxiety, and fatigue.

Immune System

E2 ModerateCohortPEM requiredCross-Sectional

Volumetric differences in hippocampal subfields and associations with clinical measures in myalgic encephalomyelitis/chronic fatigue syndrome.

Thapaliya, Kiran, Staines, Donald, Marshall-Gradisnik, Sonya et al.·Journal of neuroscience research·2022

Researchers used brain imaging to examine a part of the brain called the hippocampus, which is important for memory and thinking. They found that people with ME/CFS who met stricter diagnostic criteria had some structural differences in specific regions of their hippocampus compared to healthy people, and these differences were connected to how severe their fatigue and pain were. This finding supports the idea that ME/CFS involves real physical changes in the brain that may explain memory and cognitive problems patients experience.

Cognitive Impairment

E2 ModerateCohortPEM not requiredObservational

Combination of whole body cryotherapy with static stretching exercises reduces fatigue and improves functioning of the autonomic nervous system in Chronic Fatigue Syndrome.

Kujawski, Sławomir, Słomko, Joanna, Godlewska, Beata R et al.·Journal of translational medicine·2022

This study tested whether combining cold therapy (whole body cryotherapy) with stretching exercises could help people with ME/CFS. Over 2 weeks, 32 people with ME/CFS and 18 healthy people did 10 sessions of stretching and cold exposure. People with ME/CFS experienced less fatigue and some improvements in thinking speed after the treatment, and the cold therapy was well-tolerated with no serious safety concerns.

Autonomic Nervous System

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Evidence Atlas

Evidence browser

Impact of myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) on the quality of life of people with ME/CFS and their partners and family members: an online cross-sectional survey.

Impact of a mid-urethral synthetic mesh sling on long-term risk of systemic conditions in women with stress urinary incontinence: a national cohort study.

Revisiting IgG Antibody Reactivity to Epstein-Barr Virus in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome and Its Potential Application to Disease Diagnosis.

Metabolomic Evidence for Peroxisomal Dysfunction in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome.

Genetic association study in myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) identifies several potential risk loci.

Comparing Operationalized Approaches for Substantial Reduction of Functioning in Chronic Fatigue Syndrome and Myalgic Encephalomyelitis.

Dysregulated autoantibodies targeting vaso- and immunoregulatory receptors in Post COVID Syndrome correlate with symptom severity.

Neurological Involvement in COVID-19 Among Non-Hospitalized Adolescents and Young Adults.

Autoimmune gene expression profiling of fingerstick whole blood in Chronic Fatigue Syndrome.

The Presentation of Myalgic Encephalomyelitis/Chronic Fatigue Syndrome Is Not Influenced by the Presence or Absence of Joint Hypermobility.

Systemic antibody responses against human microbiota flagellins are overrepresented in chronic fatigue syndrome patients.

Psychogenic Pseudosyncope: Real or Imaginary? Results from a Case-Control Study in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) Patients.

Physiological assessment of orthostatic intolerance in chronic fatigue syndrome.

The Relationship between Physical Activity and Long COVID: A Cross-Sectional Study.

Epipharyngeal Abrasive Therapy (EAT) Has Potential as a Novel Method for Long COVID Treatment.

Key Features of a Multi-Disciplinary Hospital-Based Rehabilitation Program for Children and Adolescents with Moderate to Severe Myalgic Encephalomyelitis/Chronic Fatigue Syndrome ME/CFS.

Oxaloacetate Treatment For Mental And Physical Fatigue In Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) and Long-COVID fatigue patients: a non-randomized controlled clinical trial.

Intersections between pneumonia, lowered oxygen saturation percentage and immune activation mediate depression, anxiety, and chronic fatigue syndrome-like symptoms due to COVID-19: A nomothetic network approach.

Volumetric differences in hippocampal subfields and associations with clinical measures in myalgic encephalomyelitis/chronic fatigue syndrome.

Combination of whole body cryotherapy with static stretching exercises reduces fatigue and improves functioning of the autonomic nervous system in Chronic Fatigue Syndrome.

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