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New Publication from Alain Moreau, PhD, & Colleagues!

Open Medicine Foundation Canada (OMFCA) is thrilled to share a new publication from Alain Moreau, PhD & colleagues: “Exploring the neurocognitive consequences of post-exertional malaise in myalgic encephalomyelitis.”

This study shows the impact of post-exertional malaise (PEM) on the disturbance of cognition in the context of myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS), as well as the variability of cognitive domains affected in people with ME/CFS. 

Click here to read the full publication!

Alan Moreau and exploring the neurocognitive consequences of post-exertional malaise in myalgic encephalomyelitis

 

Research Summary: From the Desk of Alain Moreau, PhD, Director of the OMF ME/CFS Collaborative Research Center at the University of Montreal & Corinne Leveau, MSc, Lead Author & PhD student at the OMF ME/CFS Collaborative Research Center at the University of Montreal: 

“In this talk, I discussed the effects of post-exertional malaise (PEM) on people with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS). Our team developed a standardized test lasting 90 minutes to induce PEM in ME/CFS patients using a mechanical arm stimulation with an inflatable cuff. We included both people with ME/CFS and sedentary healthy individuals in our study. Both groups had blood drawn and underwent cognitive testing before and after the PEM test. 

Our initial findings indicate that ME/CFS participants experienced cognitive impairment after the PEM test, although a significant variation in individual responses was observed. This prompted us to divide the participants into three subgroups based on their cognitive responses. 

These subgroups align with specific microRNAs (miRNAs), which are small molecules that regulate genes. Interestingly, these same miRNAs are linked to other neurological disorders, suggesting their potential role in cognitive function. Our future research will involve looking for more miRNAs and other molecules related to various aspects of cognition (like attention, memory, and executive function) in the context of ME/CFS. These results will contribute to a better understanding of the disease, particularly its impact on brain fog and other types of cognitive impairment.” 

 

 

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Microvesicles and viral sequencing
Microvesicles are a type of extracellular vesicle that is released from the cell membrane. Vesicles are small, fluid-filled sacs or vacuoles within the body. Sequencing is a technique used to determine the exact sequence of bases (A, C, G, and T) in a DNA (or viral) molecule.
NMR Metabolomics
NMR (Nuclear Magnetic Resonance) is an instrument/tool used to perform metabolic studies, metabolic profiling, and metabolomics in biofluids and tissues for more than 40 years using magnetic fields. There is a very close connection between metabolic measurements and NMR. This connection has flourished because of NMR’s many unique strengths for characterizing complex mixtures’ chemical composition.
Proteomics
The large-scale study of proteins, which are large, complex molecules that are required for structure, function, and regulation of the human body's tissues and organs.
Immune cell profiling
The immune system has many important regulatory roles in disease development and progression. Given the emergence of effective immune therapies, reliable predictors of response are needed. Immune cell profiling determines response by evaluating immune cell populations from treated and untreated samples. For our purposes, we will evaluate the white blood cell response to the viral infection using a process called “Cytof.”
Leukocyte Genomics
A leukocyte is a colorless cell circulating in the blood and body fluids and is involved in counteracting foreign substances and disease. A genome is all genetic material of an organism. Genomics is a biology field focusing on the structure, function, evolution, mapping, and editing of genomes. Therefore, leukocyte genomics is the study of all genetic material of leukocytes.
Metabolomics
Metabolomics is a way to study metabolism – that is, through measuring amounts of the metabolites (small molecules) produced by our bodies as we convert food into energy and other molecules that our cells need to survive. Metabolomics technology is ‘large-scale,’ meaning that several thousand metabolites can be measured from a single sample of e.g., blood or urine.
Micro RNA
Cells use Micro RNA to control whether a particular gene is making too much, too little or the normal amount of its protein at a particular time.
Autoantibodies
Antibodies that react with self-molecules and that occur in healthy individuals and are referred to as natural antibodies or autoantibodies.
Extracellular DNA for viral reactivation and Mitochondrial DNA
exDNA (extracellular DNA), exDNA is often secreted actively and is used to perform several tasks, thereby offering an attractive target or tool for biotechnological, medical, environmental, and general microbiological applications. Viruses are intracellular parasites that rely to a significant extent on the host cell for replication. Viral reactivation occurs when an active replication of the viral genome results in a lytic (degradation of the cell) infection characterized by the release of new progeny (descendant) virus particles.