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MAGICAL MEDICINE: HOW TO MAKE AN ILLNESS ... - Invest in ME

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109<br />

He noted that: “The most extreme view considers these observations to provide conv<strong>in</strong>c<strong>in</strong>g evidence that (<strong>ME</strong>)CFS is,<br />

<strong>in</strong> essence, embedded <strong>in</strong> the larger construct of affective disorders”. However, <strong>in</strong> relation to <strong>ME</strong>/CFS, he noted<br />

that: “The observation of specific protracted fatigue and the absence of substantial psychiatric comorbidity<br />

argues conv<strong>in</strong>c<strong>in</strong>gly that this is an <strong>in</strong>appropriate and overly simplistic way of approach<strong>in</strong>g this puzzl<strong>in</strong>g<br />

condition. A major consideration <strong>in</strong> the approach to cl<strong>in</strong>ical therapeutics <strong>in</strong> (<strong>ME</strong>)CFS is the fact that it is, by<br />

def<strong>in</strong>ition, a chronic illness. The magnitude of disease chronicity is a feature that has an important impact on overall<br />

treatment responsiveness. Given these observations, it is notable that the specific methodology used to<br />

measure treatment outcome rarely comes under close scrut<strong>in</strong>y <strong>in</strong> studies of therapeutic <strong>in</strong>tervention <strong>in</strong> this<br />

condition. I believe it is crucial that the quality and <strong>in</strong>terpretability of past and future therapeutic studies<br />

of (<strong>ME</strong>)CFS be critically appraised to the extent that they have considered the impact of these issues <strong>in</strong> their<br />

design and conclusions”.<br />

Demitrack noted the grow<strong>in</strong>g body of central nervous system (CNS) research, especially neuroendrocr<strong>in</strong>e<br />

physiology and neuroimag<strong>in</strong>g studies, that have re<strong>in</strong>forced the view that symptoms may <strong>in</strong>deed be<br />

manifestations of a primary disruption <strong>in</strong> CNS function. In relation to <strong>in</strong>terventions, Demitrack was<br />

unambiguous: “To appropriately design and implement (successful <strong>in</strong>terventions), it becomes critically<br />

important to specify the patient population most likely to benefit from the proposed <strong>in</strong>tervention, and<br />

exceed<strong>in</strong>gly important to def<strong>in</strong>e the specific symptom, or cluster of symptoms, that may be presumed to<br />

benefit from the <strong>in</strong>tervention. In the absence of a coherent understand<strong>in</strong>g of disease pathogenesis, it does not<br />

seem plausible that any s<strong>in</strong>gle <strong>in</strong>tervention would be helpful <strong>in</strong> an undifferentiated majority of patients. It<br />

therefore may not be surpris<strong>in</strong>g that current treatment options for (<strong>ME</strong>)CFS appear only modestly effective.<br />

Non‐response, or partial response is the norm, and more than half of all patients fail to receive any benefit<br />

from many <strong>in</strong>terventions”.<br />

Demitrack concluded: “In the face of accumulat<strong>in</strong>g evidence, there is an <strong>in</strong>creas<strong>in</strong>g realisation that a<br />

unitary disease model for this condition has been a theoretical and practical impediment to real progress<br />

towards effective therapeutics for (<strong>ME</strong>)CFS. Many treatment studies have, unfortunately, neglected to<br />

thoroughly consider the significance of patient selection (and) symptom measurement” (Pharmacogenomics<br />

2006:7(3):521‐528).<br />

In 2006, Jason et al sought to subgroup patients with CFS based on a battery of basic laboratory tests and<br />

identified <strong>in</strong>fectious, <strong>in</strong>flammatory and other subgroups. When compared with controls, all subgroups<br />

reported greater physical disability:<br />

“CFS can impact any number of bodily systems <strong>in</strong>clud<strong>in</strong>g neurological, immunological, hormonal, gastro<strong>in</strong>test<strong>in</strong>al and<br />

musculoskeletal. Researchers have reported various biological abnormalities, <strong>in</strong>clud<strong>in</strong>g hormonal, immune activation,<br />

neuroendocr<strong>in</strong>e changes and neurological abnormalities, among others. However, studies <strong>in</strong>volv<strong>in</strong>g basic blood work<br />

appear to show no typical pattern of abnormality among <strong>in</strong>dividuals with CFS.<br />

“Borish et al (1998) found evidence of low level <strong>in</strong>flammation, similar to that of allergies. Natelson et al (1993) found<br />

that those with ongo<strong>in</strong>g <strong>in</strong>flammatory processes reported greater cognitive and mental disabilities. Buchwald et al<br />

(1997) found <strong>in</strong>dividuals with CFS to have significant abnormalities <strong>in</strong> C‐reactive prote<strong>in</strong> (an <strong>in</strong>dicator of acute<br />

<strong>in</strong>flammation) and neopter<strong>in</strong> (an <strong>in</strong>dicator of immune system activation, malignant disease, and viral <strong>in</strong>fections).<br />

Buchwald et al (1997) stated that <strong>in</strong>dividuals with active low level <strong>in</strong>flammatory, <strong>in</strong>fectious processes could be<br />

identified and that this was evidence of an organic process <strong>in</strong> these patients with CFS. Cook et al (2001) found that<br />

<strong>in</strong>dividuals with an abnormal MRI and ongo<strong>in</strong>g <strong>in</strong>flammatory processes had <strong>in</strong>creased physical disability, suggest<strong>in</strong>g<br />

an organic basis for CFS.<br />

“Clearly, <strong>in</strong>dividuals diagnosed with CFS are heterogeneous.<br />

“Group<strong>in</strong>g all <strong>in</strong>dividuals who meet diagnostic criteria together is prohibit<strong>in</strong>g the identification of these<br />

dist<strong>in</strong>ct biological markers of the <strong>in</strong>dividual subgroups. When specific subgroups are identified, even basic

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