ME/CFS Evidence Browser — Classified Studies on Myalgic Encephalomyelitis

2422 studies

421–440 of 2,422 studies

E3 PreliminaryMechanismPEM not requiredMechanistic

Differential Impacts of HHV-6A versus HHV-6B Infection in Differentiated Human Neural Stem Cells.

Bahramian, Elham, Furr, Mercede, Wu, Jerry T et al.·Frontiers in immunology·2022

This study examined how two closely related viruses called HHV-6A and HHV-6B infect different types of nerve cells in the brain. Researchers found that both viruses can infect certain brain cells that use glutamate and dopamine (chemical messengers), but neither virus infected a third type of brain cell that uses GABA. Importantly, HHV-6A appeared to cause more damage to infected cells than HHV-6B, suggesting it may be more harmful to nerve tissue.

Neuroinflammation

E3 PreliminaryCohortPEM unclearCase-Control

Orthostatic intolerance as a potential contributor to prolonged fatigue and inconsistent performance in elite swimmers.

Petracek, Lindsay S, Eastin, Ella F, Rowe, Ian R et al.·BMC sports science, medicine & rehabilitation·2022

This study looked at five elite swimmers who experienced severe fatigue and couldn't perform at their usual level. The researchers tested whether orthostatic intolerance—a condition where the body struggles to maintain proper blood pressure when standing—might explain their symptoms. When the swimmers were tested with standing or tilt table tests, they all felt fatigued and other symptoms appeared. After receiving treatment with extra salt and fluids, all five swimmers felt significantly better and returned to normal performance.

Autonomic Nervous System

E3 PreliminaryPEM unclear

Understanding Patient-Provider Interaction, Treatment Acceptance, and Outcomes in Medically Unexplained Symptoms.

Bellman, Val, Zolnikov, Tara Rava·Cureus·2022

This study looked at how people with medically unexplained symptoms (MUS)—long-lasting health problems that doctors cannot identify through standard tests—experience their illness and interact with healthcare providers. Researchers interviewed patients to understand their daily struggles, frustrations with the medical system, and how healthcare experiences sometimes made things worse. The study found that patients often feel dismissed, misunderstood, and disabled by their conditions, and that better communication and training for doctors could help improve care.

Diagnostics

E3 PreliminaryCohortPEM not requiredCase-Control

Stellate ganglion block reduces symptoms of Long COVID: A case series.

Liu, Luke D, Duricka, Deborah L·Journal of neuroimmunology·2022

This small study looked at a procedure called a stellate ganglion block, which uses local anesthetic to temporarily quiet the nerve signals in the neck that control your 'fight or flight' response. Two Long COVID patients received this procedure, and their symptoms—including fatigue, brain fog, and dizziness upon standing—improved. The authors suggest that an imbalance in the autonomic nervous system (the system that controls automatic body functions) may be contributing to Long COVID symptoms.

Neuroinflammation

E3 PreliminaryReviewPEM unclearReview-Narrative

[Human placenta hydrolysates: from V.P. Filatov to the present day: Review].

Gromova, O A, Torshin, I Y, Chuchalin, A G et al.·Terapevticheskii arkhiv·2022

This review examines human placenta hydrolysates (HPH)—processed extracts from human placental tissue—and their potential therapeutic effects on various conditions including chronic fatigue syndrome. The authors summarize over 5,000 published studies showing that HPH may work by stimulating the body's natural healing and regenerative abilities. The review discusses HPH's reported benefits for liver disease, skin conditions, viral infections, and fatigue-related disorders.

E3 PreliminaryMechanismPEM unclearMechanistic

Phenotypic characteristics of peripheral immune cells of Myalgic encephalomyelitis/chronic fatigue syndrome via transmission electron microscopy: A pilot study.

Jahanbani, Fereshteh, Maynard, Rajan D, Sing, Justin Cyril et al.·PloS one·2022

Researchers used a powerful microscope to examine immune cells from people with ME/CFS and found several abnormalities. They observed that immune cells from ME/CFS patients died more frequently when activated, had swollen energy-producing structures (mitochondria), and in one severely ill patient, contained unusual fat-like accumulations. These cellular changes suggest that ME/CFS involves real, measurable damage to immune system function.

Immune System

E3 PreliminaryReviewPEM unclearReview-Narrative

Dyspnea in Post-COVID Syndrome following Mild Acute COVID-19 Infections: Potential Causes and Consequences for a Therapeutic Approach.

Wirth, Klaus J, Scheibenbogen, Carmen·Medicina (Kaunas, Lithuania)·2022

Many people with post-COVID syndrome experience shortness of breath and chest pain, even though their lungs and heart are typically healthy. This study proposes that the problem may stem from overbreathing (hyperventilation) during exercise, combined with problems in how the body regulates breathing and uses energy in muscles. The authors suggest that overbreathing creates a harmful cascade inside cells—disrupting sodium and calcium balance—which worsens fatigue and breathing difficulties. Preventing overbreathing might be a way to help these patients recover.

Energy MetabolismPost-Exertional Malaise

E3 PreliminaryMechanismPEM not requiredCross-Sectional

Neurochemical abnormalities in chronic fatigue syndrome: a pilot magnetic resonance spectroscopy study at 7 Tesla.

Godlewska, Beata R, Williams, Stephen, Emir, Uzay E et al.·Psychopharmacology·2022

Researchers used a powerful brain scanning technique to measure chemicals in the brains of people with ME/CFS and compared them to healthy people. They found that people with ME/CFS had lower levels of three important brain chemicals: glutathione (which helps protect against cell damage), creatine (which helps produce energy), and myo-inositol (which is important for brain cell function). These findings suggest that ME/CFS may involve problems with energy production and cell damage in the brain.

Energy Metabolism

E3 PreliminaryPEM not required

An Unexpected Journey: The Lived Experiences of Patients with Long-Term Cognitive Sequelae After Recovering from COVID-19.

Loft, Mia I, Foged, Eva M, Koreska, Mai·Qualitative health research·2022

This study listened to people who experienced long-lasting thinking and memory problems after recovering from COVID-19. Patients described how these cognitive symptoms disrupted their daily lives, work, and relationships, and left them feeling anxious and uncertain about their future. The researchers suggest that doctors and researchers could learn from how people with similar conditions—like ME/CFS—manage their symptoms while waiting for treatments.

Cognitive Impairment

E3 PreliminaryDiagnosticPEM unclearMethods-Paper

Identification of transient receptor potential melastatin 3 proteotypic peptides employing an efficient membrane protein extraction method for natural killer cells.

Magawa, Chandi T, Eaton-Fitch, Natalie, Balinas, Cassandra et al.·Frontiers in physiology·2022

Researchers developed a better way to extract and study proteins from immune cells called natural killer cells in ME/CFS patients. They focused on a specific protein channel called TRPM3, which may play a role in ME/CFS. This study shows they can now reliably detect this protein, which opens the door for future research to understand how it might be different in ME/CFS.

Immune System

E3 PreliminaryBehavioralPEM unclear

‘The Lightning Process’ and chronic fatigue syndrome/myalgic encephalomyelitis.

Vallings, Rosamund·Journal of primary health care·2022

This study examines 'The Lightning Process,' a coaching program that some people claim can help with ME/CFS. The author, a doctor experienced in ME/CFS care, analyzed what is known about this approach and its effects on patients with this illness. The study raises concerns about whether the program is safe and effective for people with ME/CFS.

Interventions

E3 PreliminaryReviewPEM unclearReview-Narrative

Molecular Mechanisms of Neuroinflammation in ME/CFS and Long COVID to Sustain Disease and Promote Relapses.

Tate, Warren, Walker, Max, Sweetman, Eiren et al.·Frontiers in neurology·2022

This study explores why ME/CFS and Long COVID symptoms persist and come and go in cycles. The researchers propose that after an initial trigger—like a viral infection, chemical exposure, or major stress—inflammation spreads to the brain through damaged blood vessels, causing ongoing brain inflammation that keeps the illness cycling. They suggest that similar mechanisms may explain why both ME/CFS (from various causes) and Long COVID (from COVID-19) produce remarkably similar symptoms despite different starting triggers.

NeuroinflammationImmune SystemPost-Exertional Malaise

E3 PreliminaryReviewPEM not requiredReview-Narrative

[Stress, asthenia and cognitive disorders].

Vasenina, E E, Gankina, O A, Levin, O S·Zhurnal nevrologii i psikhiatrii imeni S.S. Korsakova·2022

This article examines how extreme tiredness (asthenia) relates to ME/CFS and other conditions affecting mood and thinking. The authors explain that severe fatigue can start as the body's warning signal that energy is running out, but it can develop into a serious, disabling disease on its own. They discuss how fatigue often occurs together with depression, anxiety, and problems with memory or concentration, which can make it harder for doctors to figure out what's really causing a patient's symptoms.

Cognitive Impairment

E3 PreliminaryReviewPEM unclearReview-Narrative

The Role of Neuro-Immune Interaction in Chronic Pain Conditions; Functional Somatic Syndrome, Neurogenic Inflammation, and Peripheral Neuropathy.

Meade, Elaine, Garvey, Mary·International journal of molecular sciences·2022

This review article examines how the nervous and immune systems interact to cause chronic pain and fatigue in conditions like ME/CFS, fibromyalgia, and IBS. The authors explain that childhood trauma and ongoing stress can permanently change how the body's stress response system works, leading to long-term symptoms. They discuss how these systems become dysregulated and contribute to the wide range of symptoms people with these conditions experience.

NeuroinflammationImmune System

E3 PreliminaryMechanismPEM not requiredMechanistic

Sciatic-Vagal Nerve Stimulation by Electroacupuncture Alleviates Inflammatory Arthritis in Lyme Disease-Susceptible C3H Mice.

Akoolo, Lavoisier, Djokic, Vitomir, Rocha, Sandra C et al.·Frontiers in immunology·2022

This study tested whether electroacupuncture (a needle-based treatment that uses electrical stimulation) could reduce joint inflammation and symptoms in mice with Lyme disease. The researchers found that electroacupuncture reduced inflammation markers and immune cells in the joints, even though it didn't eliminate the Lyme bacteria itself. The anti-inflammatory effects lasted even after treatment stopped, suggesting this approach might help people with long-lasting Lyme disease symptoms.

Immune System

E3 PreliminaryCohortPEM unclearObservational

Clinical effects of wasabi extract containing 6-MSITC on myalgic encephalomyelitis/chronic fatigue syndrome: an open-label trial.

Oka, Takakazu, Yamada, Yu, Lkhagvasuren, Battuvshin et al.·BioPsychoSocial medicine·2022

Researchers tested whether wasabi extract—specifically a compound called 6-MSITC that has anti-inflammatory properties—could help people with ME/CFS. Fifteen patients took the supplement daily for 12 weeks, and many reported improvements in headaches, muscle pain, brain fog, and cognitive problems like word-finding difficulties. The study found measurable improvements in pain sensitivity and thinking speed, though overall fatigue scores did not change significantly.

Pain and SensitizationCognitive Impairment

E3 PreliminaryBehavioralPEM unclearCross-Sectional

'A life I can cope with'. An alternative model of cognitive behavioural therapy (CBT) for CFS/ME.

Clark, Catherine, Holttum, Sue·Health expectations : an international journal of public participation in health care and health policy·2022

This study looked at a different approach to cognitive behavioral therapy (CBT) for ME/CFS that focuses on helping people manage and cope with their condition, rather than pushing them to do more activity. Researchers interviewed 13 people who tried this type of CBT and found that patients felt better able to handle their illness and felt less distressed, even when their fatigue didn't improve much. This suggests that CBT can help people feel more in control and emotionally better, separately from whether the fatigue itself gets better.

E3 PreliminaryPEM unclear

The circuit of symbolic violence in chronic fatigue syndrome (CFS)/myalgic encephalomyelitis (ME) (I): A preliminary study.

Gimeno Torrent, Xavier·Health care for women international·2022

This study examined letters written by ME/CFS patients to Spanish newspapers to understand why such a serious illness affecting millions remains poorly recognized by the public. The researchers found 13 different ways that society dismisses or ignores ME/CFS patients—including treating them with disrespect, refusing proper medical care, and making their illness invisible in public discussion. These patterns of dismissal work together to keep ME/CFS hidden and misunderstood.

E3 PreliminaryReviewPEM unclearReview-Narrative

Can l-carnitine reduce post-COVID-19 fatigue?

Vaziri-Harami, Roya, Delkash, Parisa·Annals of medicine and surgery (2012)·2022

Some people develop long-lasting fatigue after COVID-19 infection, similar to ME/CFS, and this fatigue can last for months. This article suggests that L-carnitine, a natural substance that helps cells produce energy, might help reduce this type of fatigue based on its success in treating fatigue caused by other diseases like cancer and multiple sclerosis. The authors recommend testing L-carnitine in clinical trials to see if it actually works and is safe for people with post-COVID fatigue.

Interventions

E3 PreliminaryMechanismPEM unclearMechanistic

Tissue specific signature of HHV-6 infection in ME/CFS.

Kasimir, Francesca, Toomey, Danny, Liu, Zheng et al.·Frontiers in molecular biosciences·2022

This study looked for signs of active HHV-6 virus (a common herpesvirus) in brain and spinal cord tissue from ME/CFS patients after death, compared to people without ME/CFS. Using a special detection technique, researchers found markers of active viral infection in the nervous tissue of ME/CFS patients but not in the control group. This suggests that HHV-6 may be reactivating specifically in the brain and nervous system in ME/CFS, rather than in the blood where it's usually tested.

Neuroinflammation

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Differential Impacts of HHV-6A versus HHV-6B Infection in Differentiated Human Neural Stem Cells.

Orthostatic intolerance as a potential contributor to prolonged fatigue and inconsistent performance in elite swimmers.

Understanding Patient-Provider Interaction, Treatment Acceptance, and Outcomes in Medically Unexplained Symptoms.

Stellate ganglion block reduces symptoms of Long COVID: A case series.

[Human placenta hydrolysates: from V.P. Filatov to the present day: Review].

Phenotypic characteristics of peripheral immune cells of Myalgic encephalomyelitis/chronic fatigue syndrome via transmission electron microscopy: A pilot study.

Dyspnea in Post-COVID Syndrome following Mild Acute COVID-19 Infections: Potential Causes and Consequences for a Therapeutic Approach.

Neurochemical abnormalities in chronic fatigue syndrome: a pilot magnetic resonance spectroscopy study at 7 Tesla.

An Unexpected Journey: The Lived Experiences of Patients with Long-Term Cognitive Sequelae After Recovering from COVID-19.

Identification of transient receptor potential melastatin 3 proteotypic peptides employing an efficient membrane protein extraction method for natural killer cells.

‘The Lightning Process’ and chronic fatigue syndrome/myalgic encephalomyelitis.

Molecular Mechanisms of Neuroinflammation in ME/CFS and Long COVID to Sustain Disease and Promote Relapses.

[Stress, asthenia and cognitive disorders].

The Role of Neuro-Immune Interaction in Chronic Pain Conditions; Functional Somatic Syndrome, Neurogenic Inflammation, and Peripheral Neuropathy.

Sciatic-Vagal Nerve Stimulation by Electroacupuncture Alleviates Inflammatory Arthritis in Lyme Disease-Susceptible C3H Mice.

Clinical effects of wasabi extract containing 6-MSITC on myalgic encephalomyelitis/chronic fatigue syndrome: an open-label trial.

'A life I can cope with'. An alternative model of cognitive behavioural therapy (CBT) for CFS/ME.

The circuit of symbolic violence in chronic fatigue syndrome (CFS)/myalgic encephalomyelitis (ME) (I): A preliminary study.

Can l-carnitine reduce post-COVID-19 fatigue?

Tissue specific signature of HHV-6 infection in ME/CFS.

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