ME/CFS Evidence Browser — Classified Studies on Myalgic Encephalomyelitis

2420 studies

1561–1580 of 2,420 studies

Chronic fatigue syndrome after Q fever.

Ledina, Dragan, Bradarić, Nikola, Milas, Ivo et al.·Medical science monitor : international medical journal of experimental and clinical research·2007

Q fever is an infection caused by bacteria that can spread from animals to people. While most people recover from acute Q fever, a few develop chronic fatigue that looks like ME/CFS. This report describes three patients who developed post-Q-fever fatigue syndrome and were treated with antibiotics, with mixed results—two improved but one did not.

E3 PreliminaryMechanismPEM not requiredCross-Sectional

The association between experimental and clinical pain measures among persons with fibromyalgia and chronic fatigue syndrome.

Geisser, Michael E, Gracely, Richard H, Giesecke, Thorsten et al.·European journal of pain (London, England)·2007

Researchers tested whether laboratory pain tests (using heat and pressure) could predict the pain people with fibromyalgia and ME/CFS experience in daily life. They found that pressure-based tests were better predictors of real-world pain than heat tests, suggesting that pressure stimulation may be a more useful research tool for studying pain in these conditions.

Pain and Sensitization

E3 PreliminaryMechanismPEM not requiredObservational

[Sleep disturbance in chronic fatigue syndrome].

Kumano-go, Takayuki, Adachi, Hiroyoshi, Sugita, Yoshiro·Nihon rinsho. Japanese journal of clinical medicine·2007

This study looked at sleep problems in ME/CFS patients using a special laser device to measure blood flow patterns during sleep. The researchers found that different ME/CFS patients showed different types of abnormal sleep patterns, suggesting that ME/CFS may actually be several different conditions rather than one single illness. Sleep disturbances like insomnia, oversleeping, and irregular sleep-wake cycles are common in ME/CFS.

Sleep

E3 PreliminaryMechanismPEM not requiredObservational

[Chronic fatigue syndrome and herpesvirus reactivation].

Kondo, Kazuhiro·Nihon rinsho. Japanese journal of clinical medicine·2007

This study looked at whether two common viruses that hide dormant in our bodies (HHV-6 and HHV-7) wake up and become active during fatigue. Researchers found that healthy people shed more HHV-6 in their saliva when tired from work, but ME/CFS patients did not show this pattern. However, HHV-7 did increase in both groups, suggesting these viruses might be useful markers to measure fatigue objectively.

BiomarkersImmune System

E3 PreliminaryReviewPEM not requiredReview-Narrative

Mechanisms of cancer-related fatigue.

Ryan, Julie L, Carroll, Jennifer K, Ryan, Elizabeth P et al.·The oncologist·2007

Cancer-related fatigue is extreme tiredness that happens during and after cancer treatment and significantly impacts quality of life, but doctors don't fully understand why it occurs. This review examines several possible causes, including problems with brain chemicals, muscle metabolism, hormonal balance, sleep-wake cycles, and inflammation in the body. Understanding these mechanisms could help develop better treatments for this distressing symptom.

Energy Metabolism

E3 PreliminaryReviewPEM not requiredReview-Narrative

Current research priorities in chronic fatigue syndrome/myalgic encephalomyelitis: disease mechanisms, a diagnostic test and specific treatments.

Kerr, J R, Christian, P, Hodgetts, A et al.·Journal of clinical pathology·2007

This review describes an organized effort by researchers to better understand ME/CFS by studying genes and immune system changes in patients' blood. The goal is to find biological markers that can reliably diagnose the illness and to test new treatments that might help. Researchers are using advanced technology to look at thousands of genes at once to find patterns specific to ME/CFS.

Immune System

E3 PreliminaryReviewPEM unclearReview-Narrative

[Advances in the treatment of multiple sclerosis?].

Tackenberg, B, Himmerich, H, Wellek, A et al.·MMW Fortschritte der Medizin·2007

This article reviews advances in treating multiple sclerosis (MS), a different neurological disease from ME/CFS. It discusses how MS treatment has improved with new diagnostic tools, early treatment approaches, and various medications. The article notes that MS patients often experience chronic fatigue, depression, and other symptoms that require separate treatment alongside MS-specific therapies.

E3 PreliminaryReviewPEM not requiredReview-Narrative

[Update in Hepatitis C virus associated extrahepatic manifestations].

Sène, D, Saadoun, D, Limal, N et al.·La Revue de medecine interne·2007

This review examines how hepatitis C virus (HCV) can affect parts of the body beyond the liver. The authors discuss various conditions linked to HCV infection, including chronic fatigue, dry mouth and eyes, diabetes, and certain blood cancers. They note that while these connections are documented, scientists still don't fully understand the mechanisms behind them.

Immune System

E3 PreliminaryCohortPEM not requiredCase-Control

[Multiple chemical sensitivity in sick-building syndrome].

Arnold Llamosas, Pablo A, Arrizabalaga Clemente, Pilar, Bonet Agusti, Montserrat et al.·Medicina clinica·2006

This study describes a dialysis worker who developed severe chronic fatigue and chemical sensitivities after prolonged exposure to poor indoor air quality in a poorly ventilated building. The person experienced eye irritation, breathing problems, and other symptoms that improved when the environmental conditions were examined and their connection to the illness was confirmed. The case highlights that healthcare facilities can expose workers to unhealthy air and chemical environments that may trigger ME/CFS-like illnesses.

Pain and Sensitization

E3 PreliminaryMechanismPEM not requiredObservational

Exploration of the gene expression correlates of chronic unexplained fatigue using factor analysis.

Fostel, Jennifer, Boneva, Roumiana, Lloyd, Andrew·Pharmacogenomics·2006

Researchers used blood tests and symptom questionnaires to look for biological markers that could help identify ME/CFS. They found that ME/CFS involves multiple symptom patterns (fatigue and mood changes being most prominent) and identified 57 genes whose activity differed between people with severe symptoms and those with mild symptoms. However, no single gene or blood test on its own clearly identifies the disease.

Biomarkers

E3 PreliminaryReviewPEM not requiredReview-Narrative

Contribution of gender to pathophysiology and clinical presentation of IBS: should management be different in women?

Ouyang, Ann, Wrzos, Helena F·The American journal of gastroenterology·2006

This review article examines why irritable bowel syndrome (IBS)—a condition causing digestive discomfort—affects more women than men. The authors discuss how biological sex differences, hormones, and gender roles may influence who develops IBS and how severe their symptoms are. They suggest that while men and women are treated similarly for IBS, paying attention to stress and gender-specific factors might improve care.

E3 PreliminaryDiagnosticPEM unclearMethods-Paper

Translation and validation of the Dutch language version of the CDC Symptom Inventory for assessment of Chronic Fatigue Syndrome (CFS).

Vermeulen, Ruud C W·Population health metrics·2006

This study tested whether a Dutch translation of a symptom checklist used to diagnose ME/CFS works as well as the original English version. Researchers asked 139 ME/CFS patients and 43 healthy people to complete the questionnaire and compared the results. The Dutch version performed well and gave similar results to the English version, confirming it's a useful tool for doctors and researchers in Dutch-speaking countries.

E3 PreliminaryReviewPEM not requiredReview-Narrative

Fatigue after spinal cord injury.

Barat, M, Dehail, P, de Seze, M·Annales de readaptation et de medecine physique : revue scientifique de la Societe francaise de reeducation fonctionnelle de readaptation et de medecine physique·2006

This review looked at fatigue that develops after spinal cord injury and found two main types: one caused by muscle weakness and paralysis from nerve damage, and another that develops over time and resembles conditions like chronic fatigue syndrome. The authors suggest that exercise programs and electrical stimulation of muscles might help reduce this fatigue and improve quality of life for people with spinal cord injuries.

E3 PreliminaryReviewPEM unclearReview-Narrative

Postulated vasoactive neuropeptide autoimmunity in fatigue-related conditions: a brief review and hypothesis.

Staines, Donald R·Clinical & developmental immunology·2006

This paper proposes that ME/CFS and similar conditions may develop when the immune system mistakenly attacks certain chemical messengers in the body called vasoactive neuropeptides (VNs). These VNs normally help control heart rate, breathing, temperature, memory, and mood. The authors suggest that after infections or other triggers, people's bodies may lose the ability to recognize these messengers as 'self,' leading to immune attacks that could cause the widespread symptoms seen in ME/CFS.

Immune System

E3 PreliminaryMechanismPEM not requiredCross-Sectional

Gene expression correlates of unexplained fatigue.

Whistler, Toni, Taylor, Renee, Craddock, R Cameron et al.·Pharmacogenomics·2006

Researchers examined blood samples from hundreds of people to find which genes are connected to fatigue in ME/CFS. They looked at over 20,000 genes and found that 839 of them showed a relationship with fatigue levels. Many of these genes are involved in energy production and metabolism in the body, though about half of the genes they found don't yet have clear functions identified.

Energy Metabolism

E3 PreliminaryCohortPEM not requiredObservational

Causes of death among patients with chronic fatigue syndrome.

Jason, Leonard A, Corradi, Karina, Gress, Sara et al.·Health care for women international·2006

This study looked at 166 people with ME/CFS who had passed away to understand what caused their deaths. The researchers found that heart failure, suicide, and cancer were the three leading causes, together accounting for nearly 60% of deaths. Notably, people with ME/CFS who died from cancer or suicide were much younger—in their late 30s to mid-40s—compared to people in the general population who died from these same causes.

E3 PreliminaryReviewPEM unclearReview-Narrative

[Possible mechanisms of chronic fatigue syndrome in multiple sclerosis].

Kasatkin, D S, Spirin, N N·Zhurnal nevrologii i psikhiatrii imeni S.S. Korsakova·2006

This review describes how fatigue in multiple sclerosis (MS) can happen in different ways: tiredness even at rest, exhaustion during activity, and fatigue linked to MS flare-ups. The authors explain that fatigue likely involves both brain-based and body-based mechanisms, and often occurs alongside depression and sleep problems, suggesting these conditions may share common biological causes related to brain chemicals like serotonin.

NeuroinflammationPost-Exertional Malaise

E3 PreliminaryMechanismPEM not requiredCross-Sectional

Gene expression profile of empirically delineated classes of unexplained chronic fatigue.

Carmel, Liran, Efroni, Sol, White, Peter D et al.·Pharmacogenomics·2006

Researchers examined genes in blood samples from 111 women with unexplained chronic fatigue to see if different types of fatigue had different gene patterns. They used computer analysis to identify specific genes that were active or inactive in different fatigue groups. They found that certain genes were consistently different between fatigued and healthy people, while other genes only differed in specific fatigue subgroups.

Biomarkers

E3 PreliminaryMechanismPEM not requiredMechanistic

Antidepressant-like activity of a Kampo (Japanese herbal) medicine, Koso-san (Xiang-Su-San), and its mode of action via the hypothalamic-pituitary-adrenal axis.

Ito, N, Nagai, T, Yabe, T et al.·Phytomedicine : international journal of phytotherapy and phytopharmacology·2006

This study tested whether Koso-san, a traditional Japanese herbal medicine, could help reduce depression-like symptoms in mice exposed to stress. Mice given Koso-san showed improved behavior in stress tests, and the herb appeared to normalize stress hormone systems in their brains that were overactive due to the stress exposure.

Endocrine Disruption

E3 PreliminaryReviewPEM unclearReview-Narrative

Fibromyalgia, infection and vaccination: two more parts in the etiological puzzle.

Ablin, Jacob N, Shoenfeld, Yehuda, Buskila, Dan·Journal of autoimmunity·2006

This review examines whether infections and vaccinations might trigger fibromyalgia and related conditions like chronic fatigue syndrome. Researchers found that certain infections (like Lyme disease and hepatitis C) have been linked to fibromyalgia, and some people report symptoms starting after vaccinations, but antibiotics and antivirals don't appear to help treat fibromyalgia effectively. The authors suggest that vaccinations might act as one trigger among several factors that together cause these conditions.

Immune System

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Chronic fatigue syndrome after Q fever.

The association between experimental and clinical pain measures among persons with fibromyalgia and chronic fatigue syndrome.

[Sleep disturbance in chronic fatigue syndrome].

[Chronic fatigue syndrome and herpesvirus reactivation].

Mechanisms of cancer-related fatigue.

Current research priorities in chronic fatigue syndrome/myalgic encephalomyelitis: disease mechanisms, a diagnostic test and specific treatments.

[Advances in the treatment of multiple sclerosis?].

[Update in Hepatitis C virus associated extrahepatic manifestations].

[Multiple chemical sensitivity in sick-building syndrome].

Exploration of the gene expression correlates of chronic unexplained fatigue using factor analysis.

Contribution of gender to pathophysiology and clinical presentation of IBS: should management be different in women?

Translation and validation of the Dutch language version of the CDC Symptom Inventory for assessment of Chronic Fatigue Syndrome (CFS).

Fatigue after spinal cord injury.

Postulated vasoactive neuropeptide autoimmunity in fatigue-related conditions: a brief review and hypothesis.

Gene expression correlates of unexplained fatigue.

Causes of death among patients with chronic fatigue syndrome.

[Possible mechanisms of chronic fatigue syndrome in multiple sclerosis].

Gene expression profile of empirically delineated classes of unexplained chronic fatigue.

Antidepressant-like activity of a Kampo (Japanese herbal) medicine, Koso-san (Xiang-Su-San), and its mode of action via the hypothalamic-pituitary-adrenal axis.

Fibromyalgia, infection and vaccination: two more parts in the etiological puzzle.

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