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ME/CFS AUSTRALIA (SA) INC
Registered Charity 698
Mailing address:
GPO Box 383,
Adelaide,
South Australia 5001
Office:
266 Port Road,
Hindmarsh,
South Australia 5007
Ph: (08) 8346 3237
('834 MECFS')
Office Hours:
Wednesdays, 10am-3pm
Support Line:
(Mondays and Thursdays,
10am-3pm)
Ph: (08) 8346 3237
SA country callers:
Ph: 1300 128 339
(local call)
FIBROMYALGIA HELP: Contact Fibromyalgia SA at the Arthritis Foundation of SA 118 Richmond Road, Marleston 5033 Ph: (08) 8379 5711 |
ME/CFS Australia (SA) Inc supports the needs of sufferers of Myalgic Encephalomyelitis, Chronic Fatigue Syndrome and related illnesses. We do this by providing services and information to members.
ME/CFS Australia (SA) Inc is a member of Charity Direct.
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ME/CFS Australia (SA) Inc aims to keep members informed of the various research projects, diets, medications, therapies etc. All communication, both verbal and written, is merely to disseminate information and not to make recommendations or directives.
Unless otherwise stated, the views expressed on this Web site are not necessarily the official views of the Society or its Committee and are not simply an endorsement of products or services.
Does muscle bioenergetic abnormality cause peripheral fatigue in ME/CFS?
Saturday 6 February 2010
ME Research UK has an article about new research investigating a possible cause of fatigue in ME/CFS:
Does muscle bioenergetic abnormality cause peripheral fatigue in ME/CFS?
Investigators
Prof. David Jones and colleagues
Institutions
Institute of Cellular Medicine, University of Newcastle, Newcastle upon Tyne, UK
Background and aims
In the historical literature, the hallmark of myalgic encephalomyelitis (ME) was marked muscle fatigability often in response to minor degrees of exercise. Muscle cramps, fasciculations (twitching) and extreme muscle tenderness were also common findings. As Dr Ramsay said in the Postgraduate Medical Journal in 1978, “This was sometimes obvious as the patients winced even on light palpitation of the affected muscle; but much more frequently it took the form of minute foci of muscle tenderness which had to be carefully sought and for no ostensible reason were generally found in the trapezii and gastrocnemii.
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Today, patients diagnosed with ME/CFS frequently highlight the importance of peripheral fatigue — such as impairment of muscle power — in their experience of illness. Research in other chronic diseases, including published work by Prof. Jones at the Institute of Cellular Medicine on the autoimmune liver disease primary biliary cirrhosis, has highlighted important downstream biological mechanisms that appear to underpin fatigue. A number of these processes are, intriguingly, common to many chronic diseases, including ME/CFS; previous work has highlighted the frequency with which dysfunction of the autonomic nervous system is seen in both ME/CFS and primary biliary cirrhosis patients, as well as patients with many other conditions. The potential for shared mechanisms behind the expression of fatigue (if not its pathogenesis) is suggested by other recent work in the Institute of Cellular Medicine highlighting the close similarities in the phenotype of fatigue seen in a number of chronic diseases and ME/CFS.
In novel studies at the University of Newcastle using magnetic resonance scanning of peripheral muscle in ME/CFS patients (a scanning technique which looks at the way in which muscle is working), significant abnormalities in the handling of acid within muscle during exercise have been observed. It might be that acid build-up during exercise in ME/CFS patients results from reduced function of an important energy-generating enzyme within the mitochondria (the “batteries of the cell”) causing peripheral fatigue which “feeds-back” to the brain.
Given these findings, the aim of this project is to study, in the in vitro setting, the function of an energy-generating enzyme which the researchers hypothesise might be under-functioning in ME/CFS. A range of in vitro studies will be undertaken, all based on primary assay and culture of muscle cells (myocytes) derived from ME/CFS patients (fulfilling the Canadian criteria for ME/CFS) and matched normal and chronic disease controls (following establishment of the techniques using existing myocyte cell lines).
There are two broad aspects to the proposed investigative strategy. In the first (already funded by the Northern Clinical Network in Newcastle), an examination will be made of the function of ME/CFS patients’ muscle cells which have been grown in culture; the muscle biopsies taken during this phase represent a unique opportunity to study the pathways of metabolism within muscle, exploring the expression of the key energy generating enzymes and the cell proteins which help to control acid build up within the cell. The second aspect (funded by ME Research UK) involves array studies to look at metabolic gene expression in muscle. It is hoped that the results will show whether gene expression is altered in cultured muscle cells from patients with ME/CFS, and whether the change in gene expression with exercise in vitro is impaired in these muscle cultures.
This interesting range of studies builds on existing academic strengths in muscle energetics and culture, together with nanotechnology development, all of which are applied to the illness ME/CFS for the first time.
The above originally appeared here.
Please note: the above article contains references to death. If you have feelings of helplessness, or of suicidal thoughts, seek help immediately. Lifeline is an excellent starting point: Lifeline – Suicide Prevention resources and links.
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