Journal of IiMER Volume 13 Issue 1 Invest in ME Research Abstract: Role of transient receptor potential ion channels in the etiology and pathomechanism of ME/CFS Staines D1,2 Cabanas H1,2,, Muraki K2,3 , Balinas C1,2, Eaton-Fitch N,1,2, , Marshall-Gradisnik S1, 2. 1.The National Centre for Neuroimmunology and Emerging Diseases, Menzies Health Institute Queensland, Griffith University, Gold Coast, Southport, QLD, 4222, Australia. h.cabanas@griffith.edu.au. 2. Consortium Health International for Myalgic Encephalomyelitis, National Centre for Neuroimmunology and Emerging Diseases, Griffith University, Gold Coast, QLD, Australia. h.cabanas@griffith.edu.au. 3. Laboratory of Cellular Pharmacology, School of Pharmacy, Aichi-Gakuin University, Chikusa, Nagoya, Japan. NCNED has confirmed the pathology of transient receptor potential (TRP) ion channels in ME/CFS. TRP Melastatin 3 (TRPM3) impairment has been identified in three separate cohorts of patients. TRPM ion channels are non-selective calcium ion channels increasingly associated with systemic, particularly central nervous system (CNS), pathology. TRPM3 is highly concentrated in the CNS, (autonomic) ANS and (peripheral) PNS. The observed changes in gene structures and TRP receptor ion channel proteins are reflected in perturbations of intracellular calcium signalling. These findings have been demonstrated through electrophysiology patch-clamp technology, the gold standard for research into ion channel function. Drugs are now being analysed in this research context regarding suitability for pharmacotherapeutics and hence treatments. The demonstrated pathology of TRPM correlates with symptom presentation in ME/CFS. Patch clamp identification of impaired TRP ion channels, the findings of drugs in a therapeutic context and the known roles of TRPM ion channels in systemic diseases establishes TRP pathology as the underlying cause of ME/CFS. Additional data demonstrating changes in other TRP sub-family members is currently under publication. Whether these additional changes reflect compensatory mechanisms is being investigated. Invest in ME Research (Charity Nr. 1153730) Dr Jesper Mehlsen Bispebjerg Hospital, Copenhagen, Denmark Jesper Mehlsen graduated as a doctor in 1979 from the University of Copenhagen and became a specialist in 1990. For 35 years he has been working clinically and in research with patients with disorders of blood pressure control, with dizziness, fainting (syncope) and near-fainting in upright position. He is author / co-author of more than 140 articles in international journals and has been the leader of a number of research projects in these fields and with projects related to HPV vaccination. Over the past 5 years, he has performed clinical research with patients who suspect vaccine damage as the cause of the development of a number of symptoms that are often common to those seen in chronic fatigue syndrome / ME. His expertise is in Autonomic nervous system, Heart rate and blood pressure control, Cardiovascular physiology and pathophysiology, HPV vaccines and -complications His Main research areas relate to methods for the study of autonomic cardiovascular control; Mathematical modelling of cardiovascular control; Autoimmune response to vaccination; Mathematical modeling of the neuroinflammatory reflex. His current research involves mathematical analysis of hemodynamic adaptations to the upright posture; mathematical analysis of hemodynamic response to Valsalva manoeuvre; dynamic T-wave alterations and the autonomic nervous system; mathematical analysis of cytokine response to LPS in humans; autoimmunity in patients with possible side effects to HPV vaccination. He places great emphasis on taking time to listen, investigate, explain and find treatment options based on a holistic assessment and in close interaction with the patient investinme.org Page 45 of 52

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