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Systemic exertion intolerance

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https://www.readbyqxmd.com/read/28768837/vitamin-d-in-the-spectrum-of-prediabetes-and-cardiovascular-autonomic-dysfunction
#1
REVIEW
Rumyana Dimova, Tsvetalina Tankova, Nevena Chakarova
Vitamin D is a fat-soluble secosteroid hormone with pleiotropic effects. 1,25-Dihydroxyvitamin D coordinates the biosynthesis of neurotransmitters in the central nervous system, which regulate cardiovascular autonomic function and may explain its putative role in the development of cardiovascular autonomic neuropathy (CAN). CAN is an independent risk factor for mortality in patients with diabetes and prediabetes and is associated with an increased risk of developing type 2 diabetes and cardiovascular disease...
September 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28720463/incidence-rates-of-guillain-barr%C3%A3-gbs-chronic-fatigue-systemic-exertion-intolerance-disease-cfs-seid-and-postural-orthostatic-tachycardia-syndrome-pots-prior-to-introduction-of-human-papilloma-virus-hpv-vaccination-among-adolescent-girls-in-finland-2002-2012
#2
J Skufca, J Ollgren, E Ruokokoski, O Lyytikäinen, H Nohynek
BACKGROUND: In Finland a vaccination programme against human papillomavirus (HPV) was introduced in November 2013 for girls aged 11-12 years with a catchup for girls 13-15 years. Allegations that HPV vaccine is causing Guillain Barré syndrome (GBS) and non-specific diagnostic entities, such as chronic fatigue syndrome/systemic exertion intolerance disease (CFS/SEID) and postural orthostatic tachycardia syndrome (POTS), continue to surface. We examined population register-based incidence rates of CFS/SEID, GBS and POTS to provide baseline data for future HPV vaccine safety evaluations...
June 2017: Papillomavirus Research
https://www.readbyqxmd.com/read/28674681/myalgic-encephalomyelitis-chronic-fatigue-syndrome-diagnosis-and-management-in-young-people-a-primer
#3
REVIEW
Peter C Rowe, Rosemary A Underhill, Kenneth J Friedman, Alan Gurwitt, Marvin S Medow, Malcolm S Schwartz, Nigel Speight, Julian M Stewart, Rosamund Vallings, Katherine S Rowe
Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a complex disease that affects children and adolescents as well as adults. The etiology has not been established. While many pediatricians and other health-care providers are aware of ME/CFS, they often lack essential knowledge that is necessary for diagnosis and treatment. Many young patients experience symptoms for years before receiving a diagnosis. This primer, written by the International Writing Group for Pediatric ME/CFS, provides information necessary to understand, diagnose, and manage the symptoms of ME/CFS in children and adolescents...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28476924/molecular-effects-of-exercise-training-in-patients-with-cardiovascular-disease-focus-on-skeletal-muscle-endothelium-and-myocardium
#4
REVIEW
Volker Adams, Bernhard Reich, Madlen Uhlemann, Josef Niebauer
For decades, we have known that exercise training exerts beneficial effects on the human body, and clear evidence is available that a higher fitness level is associated with a lower incidence of suffering premature cardiovascular death. Despite this knowledge, it took some time to also incorporate physical exercise training into the treatment plan for patients with cardiovascular disease (CVD). In recent years, in addition to continuous exercise training, further training modalities such as high-intensity interval training and pyramid training have been introduced for coronary artery disease patients...
July 1, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28475869/glucose-sensing-by-skeletal-myocytes-couples-nutrient-signaling-to-systemic-homeostasis
#5
Zhuo-Xian Meng, Jianke Gong, Zhimin Chen, Jingxia Sun, Yuanyuan Xiao, Lin Wang, Yaqiang Li, Jianfeng Liu, X Z Shawn Xu, Jiandie D Lin
Skeletal muscle is a major site of postprandial glucose disposal. Inadequate insulin action in skeletal myocytes contributes to hyperglycemia in diabetes. Although glucose is known to stimulate insulin secretion by β cells, whether it directly engages nutrient signaling pathways in skeletal muscle to maintain systemic glucose homeostasis remains largely unexplored. Here we identified the Baf60c-Deptor-AKT pathway as a target of muscle glucose sensing that augments insulin action in skeletal myocytes. Genetic activation of this pathway improved postprandial glucose disposal in mice, whereas its muscle-specific ablation impaired insulin action and led to postprandial glucose intolerance...
May 4, 2017: Molecular Cell
https://www.readbyqxmd.com/read/28275174/physiological-and-clinical-relevance-of-exercise-ventilatory-efficiency-in-copd
#6
REVIEW
J Alberto Neder, Danilo C Berton, Flavio F Arbex, Maria Clara Alencar, Alcides Rocha, Priscila A Sperandio, Paolo Palange, Denis E O'Donnell
Exercise ventilation (V'E) relative to carbon dioxide output (V'CO2 ) is particularly relevant to patients limited by the respiratory system, e.g. those with chronic obstructive pulmonary disease (COPD). High V'E-V'CO2 (poor ventilatory efficiency) has been found to be a key physiological abnormality in symptomatic patients with largely preserved forced expiratory volume in 1 s (FEV1). Establishing an association between high V'E-V'CO2 and exertional dyspnoea in mild COPD provides evidence that exercise intolerance is not a mere consequence of detraining...
March 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28033311/cdc-grand-rounds-chronic-fatigue-syndrome-advancing-research-and-clinical-education
#7
Elizabeth R Unger, Jin-Mann Sally Lin, Dana J Brimmer, Charles W Lapp, Anthony L Komaroff, Avindra Nath, Susan Laird, John Iskander
Chronic fatigue syndrome (CFS) is a complex and serious illness that is often misunderstood. Experts have noted that the terminology "chronic fatigue syndrome" can trivialize this illness and stigmatize persons who experience its symptoms (1). The name was coined by a group of clinicians convened by CDC in the late 1980s to develop a research case definition for the illness, which, at the time, was called chronic Epstein-Barr virus syndrome. The name CFS was suggested because of the characteristic persistent fatigue experienced by all those affected and the evidence that acute or reactivated Epstein-Barr virus infection was not associated with many cases (2)...
December 30, 2016: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/27908417/biphasic-action-of-iodine-in-excess-at-different-doses-on-ovary-in-adult-rats
#8
Dakshayani Mahapatra, Amar K Chandra
Iodine consumption in excess of its recommended levels over a prolonged period of time is well known to cause thyroid disorders. The thyroid hormones on the other hand are responsible in maintenance of the physiology of the reproductive system. Excess iodine intake affects male reproductive physiology. However, the effects of excess iodine on the ovarian structure and function is yet to be established. The present study has thus been undertaken to investigate the effect of excess iodine on the ovarian physiology...
January 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/27827363/control-of-diabetic-hyperglycaemia-and-insulin-resistance-through-tsc22d4
#9
Bilgen Ekim Üstünel, Kilian Friedrich, Adriano Maida, Xiaoyue Wang, Anja Krones-Herzig, Oksana Seibert, Anke Sommerfeld, Allan Jones, Tjeerd P Sijmonsma, Carsten Sticht, Norbert Gretz, Thomas Fleming, Peter P Nawroth, Wolfgang Stremmel, Adam J Rose, Mauricio Berriel-Diaz, Matthias Blüher, Stephan Herzig
Obesity-related insulin resistance represents the core component of the metabolic syndrome, promoting glucose intolerance, pancreatic beta cell failure and type 2 diabetes. Efficient and safe insulin sensitization and glucose control remain critical therapeutic aims to prevent diabetic late complications Here, we identify transforming growth factor beta-like stimulated clone (TSC) 22 D4 as a molecular determinant of insulin signalling and glucose handling. Hepatic TSC22D4 inhibition both prevents and reverses hyperglycaemia, glucose intolerance and insulin resistance in diabetes mouse models...
November 9, 2016: Nature Communications
https://www.readbyqxmd.com/read/27696568/postural-orthostatic-tachycardia-is-not-a-useful-diagnostic-marker-for-chronic-fatigue-syndrome
#10
M E Roerink, J W M Lenders, I C Schmits, A M A Pistorius, J W Smit, H Knoop, J W M van der Meer
BACKGROUND: Postural orthostatic tachycardia syndrome (POTS) is considered a diagnostic marker for chronic fatigue syndrome (CFS). OBJECTIVES: The aims of this study were to (i) compare POTS prevalence in a CFS cohort with fatigued patients not meeting CFS criteria, and (ii) assess activity, impairment and response to cognitive behavioural therapy (CBT) in CFS patients with POTS (POTS-CFS) and without POTS (non-POTS-CFS). METHODS: Prospective cohort study at the Radboud University Medical Centre in the Netherlands...
February 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/27260787/-chronic-fatigue-syndrome-a-new-disorder
#11
J-D de Korwin, L Chiche, I Banovic, A Ghali, S Delliaux, F-J Authier, G Cozon, P-Y Hatron, I Fornasieri, F Morinet
More than 30 years after its individualization, chronic fatigue syndrome (CFS) remains a debilitating condition for the patient and a confusing one to the physicians, both because of diagnostic difficulties and poorly codified management. Despite the numerous work carried out, its pathophysiology remains unclear, but a multifactorial origin is suggested with triggering (infections) and maintenance (psychological) factors as well as the persistence of inflammatory (low grade inflammation, microglial activation…), immunologic (decrease of NK cells, abnormal cytokine production, reactivity to a variety of allergens, role of estrogens…) and muscular (mitochondrial dysfunction and failure of bioenergetic performance) abnormalities at the origin of multiple dysfunctions (endocrine, neuromuscular, cardiovascular, digestive…)...
December 2016: La Revue de Médecine Interne
https://www.readbyqxmd.com/read/27187093/effect-of-acute-exercise-on-fatigue-in-people-with-me-cfs-seid-a-meta-analysis
#12
REVIEW
Bryan D Loy, Patrick J O'Connor, Rodney K Dishman
PURPOSE: A prominent symptom of myalgic encephalomyelitis, chronic fatigue syndrome, or systemic exertion intolerance disease (ME/CFS/SEID) is persistent fatigue that is worsened by physical exertion. Here the population effect of a single bout of exercise on fatigue symptoms in people with ME/CFS/SEID was estimated and effect moderators were identified. METHODS: Google Scholar was systematically searched for peer-reviewed articles published between February 1991 and May 2015...
October 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27058248/sir2-acts-through-hepatocyte-nuclear-factor-4-to-maintain-insulin-signaling-and-metabolic-homeostasis-in-drosophila
#13
Rebecca A S Palu, Carl S Thummel
SIRT1 is a member of the sirtuin family of NAD+-dependent deacetylases, which couple cellular metabolism to systemic physiology. Although studies in mouse models have defined a central role for SIRT1 in maintaining metabolic health, the molecular mechanisms remain unclear. Here we show that loss of the Drosophila SIRT1 homolog sir2 leads to the age-progressive onset of hyperglycemia, obesity, glucose intolerance, and insulin resistance. Tissue-specific functional studies show that Sir2 is both necessary and sufficient in the fat body (analogous to the mammalian liver) to maintain glucose homeostasis and peripheral insulin sensitivity...
April 2016: PLoS Genetics
https://www.readbyqxmd.com/read/27013448/regulatory-role-of-natural-killer-t-cells-in-diabetes
#14
REVIEW
Celine Tard, Ophelie Rouxel, Agnes Lehuen
Type 1 and type 2 diabetes are growing public health problems. Despite having different pathophysiologies, both diseases are associated with defects in immune regulation. Invariant natural killer T (iNKT) cells are innate-like T cells that recognize glycolipids presented by CD1d. These cells not only play a key role in the defense against pathogens, but also exert potent immunoregulatory functions. The regulatory role of iNKT cells in the prevention of type 1 diabetes has been demonstrated in murine models and analyzed in diabetic patients...
December 2015: Biomedical Journal
https://www.readbyqxmd.com/read/26969359/exertional-heat-stroke-and-acute-liver-failure-a-late-dysfunction
#15
Ana Sofia Carvalho, Simão C Rodeia, Joana Silvestre, Pedro Póvoa
Heat stroke (HS) is defined as a severe elevation of core body temperature along with central nervous system dysfunction. Exertional heat stroke (EHS) with acute liver failure (ALF) is a rare condition. The authors report the case of a 25-year-old man with a history of cognitive enhancers' intake who developed hyperthermia and neurological impairment while running an outdoor marathon. The patient was cooled and returned to normal body temperature after 6 h. He subsequently developed ALF and was transferred to the intensive care unit...
March 11, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/26899010/epigenetic-treatment-of-neurodegenerative-disorders-alzheimer-and-parkinson-diseases
#16
Michael H Irwin, Walter H Moos, Douglas V Faller, Kosta Steliou, Carl A Pinkert
Preclinical Research In this review, we discuss epigenetic-driven methods for treating neurodegenerative disorders associated with mitochondrial dysfunction, focusing on carnitinoid antioxidant-histone deacetylase inhibitors that show an ability to reinvigorate synaptic plasticity and protect against neuromotor decline in vivo. Aging remains a major risk factor in patients who progress to dementia, a clinical syndrome typified by decreased mental capacity, including impairments in memory, language skills, and executive function...
May 2016: Drug Development Research
https://www.readbyqxmd.com/read/26813101/can-nitrite-ampk-up-sirt-ainty-to-treat-heart-failure-with-preserved-ejection-fraction
#17
EDITORIAL
Steven Hsu, David A Kass
No abstract text is available yet for this article.
February 23, 2016: Circulation
https://www.readbyqxmd.com/read/26789264/chronic-uridine-administration-induces-fatty-liver-and-pre-diabetic-conditions-in-mice
#18
Yasuyo Urasaki, Giuseppe Pizzorno, Thuc T Le
Uridine is a pyrimidine nucleoside that exerts restorative functions in tissues under stress. Short-term co-administration of uridine with multiple unrelated drugs prevents drug-induced liver lipid accumulation. Uridine has the ability to modulate liver metabolism; however, the precise mechanism has not been delineated. In this study, long-term effects of uridine on liver metabolism were examined in both HepG2 cell cultures and C57BL/6J mice. We report that uridine administration was associated with O-GlcNAc modification of FOXO1, increased gluconeogenesis, reduced insulin signaling activity, and reduced expression of a liver-specific fatty acid binding protein FABP1...
2016: PloS One
https://www.readbyqxmd.com/read/26683192/changes-in-gut-and-plasma-microbiome-following-exercise-challenge-in-myalgic-encephalomyelitis-chronic-fatigue-syndrome-me-cfs
#19
Sanjay K Shukla, Dane Cook, Jacob Meyer, Suzanne D Vernon, Thao Le, Derek Clevidence, Charles E Robertson, Steven J Schrodi, Steven Yale, Daniel N Frank
Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a disease characterized by intense and debilitating fatigue not due to physical activity that has persisted for at least 6 months, post-exertional malaise, unrefreshing sleep, and accompanied by a number of secondary symptoms, including sore throat, memory and concentration impairment, headache, and muscle/joint pain. In patients with post-exertional malaise, significant worsening of symptoms occurs following physical exertion and exercise challenge serves as a useful method for identifying biomarkers for exertion intolerance...
2015: PloS One
https://www.readbyqxmd.com/read/26613325/review-of-myalgic-encephalomyelitis-chronic-fatigue-syndrome-an-evidence-based-approach-to-diagnosis-and-management-by-clinicians
#20
REVIEW
Alison C Bested, Lynn M Marshall
This review was written from the viewpoint of the treating clinician to educate health care professionals and the public about Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS). It includes: the clinical definition of ME/CFS with emphasis on how to diagnose ME/CFS; the etiology, pathophysiology, management approach, long-term prognosis and economic cost of ME/CFS. After reading this review, you will be better able to diagnose and treat your patients with ME/CFS using the tools and information provided...
2015: Reviews on Environmental Health
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