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https://www.readbyqxmd.com/read/28635909/-chronic-obstructive-pulmonary-disease-concurrent-with-metabolic-syndrome-pathophysiological-and-clinical-features
#1
A V Budnevsky, E S Ovsyannikov, N B Labzhania
Chronic obstructive pulmonary disease (COPD) still remains a serious public health problem, which is a common cause of disability and death in the able-bodied population. Furthermore, the number of patients with metabolic syndrome (MS) is steadily increasing worldwide. Recently, there is also an increase in the number of patients with COPD concurrent with MS, which is a mutually confounding risk factor for concomitant cardiovascular disease and adversely affects prognosis in these patients. Systemic subclinical inflammation is a common link between COPD and the components of MS...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/28626082/significant-role-of-the-cardio-postural-interaction-in-blood-pressure-regulation-during-standing
#2
Da Xu, Ajay Verma, Amanmeet Garg, Michelle Bruner, Reza Fazel-Rezai, Andrew P Blaber, Kouhyar Tavakolian
Cardiovascular and postural control systems have been studied independently despite the increasing evidence showing the importance of cardio-postural interaction in blood pressure regulation. In this study, we aimed to assess the role of cardio-postural interaction in relation to cardiac baroreflex in blood pressure regulation under orthostatic stress before and after mild exercise. Physiological variables representing cardiovascular control (heart rate and systolic blood pressure), lower limb muscle activation (electromyography), and postural sway (center of pressure derived from force and moment data during sway) were measured from 17 healthy participants (25±2 years; 8 females) during a sit-to-stand test before and after sub-maximal exercise...
June 16, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28620055/the-effects-of-rsr13-on-microvascular-po2-kinetics-and-muscle-contractile-performance-in-the-rat-arterial-ligation-model-of-peripheral-arterial-disease
#3
Aiko Watanabe, David C Poole, Yutaka Kano
Exercise intolerance and claudication are symptomatic of peripheral arterial disease. There is a close relationship between muscle O2 delivery, microvascular oxygen partial pressure (PmvO2) and contractile performance. We therefore hypothesized that a reduction of hemoglobin-oxygen affinity via RSR13 would maintain a higher PmvO2 and enhance blood-muscle O2 transport and contractile function. In male Wistar rats we created hindlimb ischemia via right side iliac artery ligation (AL). The contralateral (left) muscle served as control (CONT)...
June 15, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28608633/asymptomatic-pulmonary-arteriovenous-malformations-in-children-with-hereditary-hemorrhagic-telangiectasia
#4
Ashley M Gefen, Andrew J White
BACKGROUND: Children with Hereditary Hemorrhagic Telangiectasia (HHT) may have pulmonary arteriovenous malformations (AVMs), which can lead to symptoms of shortness of breath, exercise intolerance, clubbing, cyanosis and hemoptysis. However, some patients with pulmonary AVMs may be asymptomatic, placing them at risk for complications such as stroke or brain abscess if they are not identified and treated. This study examines the incidence of signs and symptoms associated with pulmonary AVMs in children with HHT known to have pulmonary AVMs...
June 13, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/28602367/heart-failure-with-preserved-ejection-fraction-in-older-adults
#5
REVIEW
Bharathi Upadhya, Dalane W Kitzman
Most elderly patients, particularly women, who have heart failure, have a preserved ejection fraction. Patients with this syndrome have severe symptoms of exercise intolerance, frequent hospitalizations, and increased mortality. Despite the importance of heart failure with preserved ejection fraction (HFpEF), the understanding of its pathophysiology is incomplete, and optimal treatment remains largely undefined. Unlike the management of HFrEF, there is a paucity of large evidence-based trials demonstrating morbidity and mortality benefit for the treatment of HFpEF...
July 2017: Heart Failure Clinics
https://www.readbyqxmd.com/read/28594869/compound-heterozygous-mutations-in-glycyl-trna-synthetase-gars-cause-mitochondrial-respiratory-chain-dysfunction
#6
Michael Nafisinia, Lisa G Riley, Wendy A Gold, Kaustuv Bhattacharya, Carolyn R Broderick, David R Thorburn, Cas Simons, John Christodoulou
Glycyl-tRNA synthetase (GARS; OMIM 600287) is one of thirty-seven tRNA-synthetase genes that catalyses the synthesis of glycyl-tRNA, which is required to insert glycine into proteins within the cytosol and mitochondria. To date, eighteen mutations in GARS have been reported in patients with autosomal-dominant Charcot-Marie-Tooth disease type 2D (CMT2D; OMIM 601472), and/or distal spinal muscular atrophy type V (dSMA-V; OMIM 600794). In this study, we report a patient with clinical and biochemical features suggestive of a mitochondrial respiratory chain (MRC) disorder including mild left ventricular posterior wall hypertrophy, exercise intolerance, and lactic acidosis...
2017: PloS One
https://www.readbyqxmd.com/read/28590162/exercise-testing-supplemental-oxygen-and-hypoxia
#7
Susan A Ward, Michael Pw Grocott, Denny Zh Levett
Cardiopulmonary exercise testing (CPET) in hyperoxia and hypoxia has several applications, stemming from characterization of abnormal physiological response profiles associated with exercise intolerance. As altered oxygenation can impact on the performance of gas-concentration and flow sensors and pulmonary gas exchange algorithms, integrated CPET system function requires validation under these conditions. Also, as oxygenation status can influence peak O2 uptake, care should be taken in the selection of work-rate incrementation rates when CPET performance is to be compared with sea-level...
June 7, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28572891/factors-positively-influencing-health-are-associated-with-a-lower-risk-of-development-of-metabolic-syndrome-in-korean-men-the-2007-2009-korean-national-health-and-nutrition-examination-survey
#8
Shinhye Kim, Mi-Ra Cho, Taejong Kim, Hyoung-Ji Lim, Jae Woo Lee, Hee-Taik Kang
BACKGROUND: The prevalence of metabolic syndrome (MetS) has risen rapidly worldwide, including in South Korea. Factors related to lifestyle are closely associated with the development of MetS. The aim of this study was to investigate the association between MetS and a number of factors positively influencing health, namely non-smoking, low-risk drinking, sufficient sleep, regular exercise, and the habit of reading food labels, among Korean men. METHODS: This cross-sectional study included 3,869 men from the 2007-2009 Korean National Health and Nutrition Examination Survey...
May 2017: Korean Journal of Family Medicine
https://www.readbyqxmd.com/read/28571979/impact-of-high-fat-diet-on-the-intestinal-microbiota-and-small-intestinal-physiology-before-and-after-the-onset-of-obesity
#9
REVIEW
João Ricardo Araújo, Julie Tomas, Christiane Brenner, Philippe J Sansonetti
The modulation of the intestinal microbiota by high-fat diet (HFD) has a major impact on both immunological and metabolic functions of the host. Taking this into consideration, the aim of this contribution is to review the impact of HFD on microbiota profile and small intestinal physiology before and after the onset of obesity and its metabolic complications. Evidence from animal studies suggest that before the onset of obesity and its metabolic complications, HFD induces intestinal dysbiosis - encompassing changes in composition balance and massive redistribution with bacteria occupying intervillous spaces and crypts - associated with early physiopathological changes, predominantly in the ileum, such as low-grade inflammation, decreased antimicrobial peptides expression, impaired mucus production, secretion and layer's thickness, and decreased expression of tight junction proteins...
May 29, 2017: Biochimie
https://www.readbyqxmd.com/read/28559828/multisystem-disease-including-eosinophilia-and-progressive-hyper-creatine-kinase-emia-over-10-years-suggests-mitochondrial-disorder
#10
Josef Finsterer, Johannes Huber
BACKGROUND: Eosinophilia has not been reported as a manifestation of a mitochondrial disorder (MID). Here, we report a patient with clinical features suggesting a MID and permanent eosinophilia, multisystem disease, and progressive hyper-creatine-kinase (CK)-emia for at least 10 years. MATERIALS AND METHODS: Methods applied included a clinical exam, blood chemical investigations, electrophysiological investigations, imaging, and invasive cardiological investigations...
January 2017: Case Reports in Neurology
https://www.readbyqxmd.com/read/28555043/chronic-fructose-ingestion-as-a-major-health-concern-is-a-sedentary-lifestyle-making-it-worse-a-review
#11
REVIEW
Amy J Bidwell
Obesity contributes to metabolic abnormalities such as insulin resistance, dyslipidemia, hypertension, and glucose intolerance, all of which are risk factors associated with metabolic syndrome. The growing prevelance of metabolic syndrome seems to be an end result of our current lifestyle which promotes high caloric, high-fat foods and minimal physical activity, resulting in a state of positive energy balance. Increased adiposity and physical inactivity may represent the beginning of the appearance of these risk factors...
May 28, 2017: Nutrients
https://www.readbyqxmd.com/read/28548623/pneumocystis-carinii-infection-with-severe-pneumomediastinum-and-lymph-node-involvement-in-a-whippet-mixed-breed-dog
#12
Christiane Weissenbacher-Lang, Andrea Fuchs-Baumgartinger, Andrea Klang, Sibylle Kneissl, Armin Pirker, Sarina Shibly, Stephanie von Ritgen, Herbert Weissenböck, Frank Künzel
A 3.5-y-old Whippet mixed-breed dog was presented with a history of respiratory distress, exercise intolerance, and generalized demodicosis. Hematologic alterations included marked leukocytosis and neutrophilia. Radiographic examination showed a diffuse interstitial and mild peripheral alveolar lung pattern and pneumomediastinum. Because the cytologic examination of the bronchoalveolar aspirate was not diagnostic and a persistent perforation of the upper respiratory tract could not be ruled out, the dog was submitted to thoracoscopy, and subsequently the left cranial lung lobe as well as mediastinal and sternal lymph nodes were resected...
May 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28548545/mild-chronic-obstructive-pulmonary-disease-why-spirometry-is-not-sufficient
#13
Amany F Elbehairy, Grace Parraga, Katherine A Webb, J Alberto Neder, Denis E O'Donnell
Chronic obstructive pulmonary disease (COPD) - an inflammatory disease of the airways, alveoli and lung microvasculature - is a leading cause of death worldwide. Smokers with milder airway obstruction constitute the majority of patients with this disease. Many studies have shown increased morbidity, activity-related dyspnea, exercise intolerance and mortality in such patients, compared with age-matched healthy populations. Clinical evaluation of symptomatic smokers with ostensibly mild airway obstruction poses a challenge in clinical practice as spirometry can obscure extensive heterogeneous pathophysiological impairment...
June 5, 2017: Expert Review of Respiratory Medicine
https://www.readbyqxmd.com/read/28545403/long-lasting-effect-of-obesity-on-skeletal-muscle-transcriptome
#14
Ilhem Messaoudi, Mithila Handu, Maham Rais, Suhas Sureshchandra, Byung S Park, Suzanne S Fei, Hollis Wright, Ashley E White, Ruhee Jain, Judy L Cameron, Kerri M Winters-Stone, Oleg Varlamov
BACKGROUND: Reduced physical activity and increased intake of calorically-dense diets are the main risk factors for obesity, glucose intolerance, and type 2 diabetes. Chronic overnutrition and hyperglycemia can alter gene expression, contributing to long-term obesity complications. While caloric restriction can reduce obesity and glucose intolerance, it is currently unknown whether it can effectively reprogram transcriptome to a pre-obesity level. The present study addressed this question by the preliminary examination of the transcriptional dynamics in skeletal muscle after exposure to overnutrition and following caloric restriction...
May 25, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28543538/clinical-and-histopathological-features-of-myofibrillar-myopathy-in-warmblood-horses
#15
S J Valberg, A M Nicholson, S S Lewis, R A Reardon, C J Finno
BACKGROUND: To report a novel exertional myopathy, myofibrillar myopathy (MFM), in Warmblood horses. OBJECTIVES: To 1) describe the distinctive clinical and myopathic features of MFM in Warmblood horses, 2) investigate the potential inheritance of MFM in a Warmblood family. STUDY DESIGN: Retrospective selection of MFM cases and prospective evaluation of a Warmblood family. METHODS: Retrospectively, muscle biopsies were selected from Warmblood horses diagnosed with MFM and clinical histories obtained (n = 10)...
May 22, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28542926/effect-of-spironolactone-on-exercise-tolerance-and-arterial-function-in-older-adults-with-heart-failure-with-preserved-ejection-fraction
#16
Bharathi Upadhya, William G Hundley, Peter H Brubaker, Timothy M Morgan, Kathryn P Stewart, Dalane W Kitzman
OBJECTIVES: To evaluate the effects of an aldosterone antagonist on exercise intolerance in older adults with heart failure and preserved ejection fraction (HFpEF). DESIGN: Randomized, placebo-controlled, double-blind trial. SETTING: Academic medical center, Winston-Salem, North Carolina. PARTICIPANTS: Older adults (N = 80, aged 71 ± 1; 80% female) with stable compensated HFpEF and controlled blood pressure (BP)...
May 19, 2017: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/28541595/how-does-ivabradine-effect-erectile-dysfunction-in-patients-with-heart-failure
#17
Fatih Aydın, Serkan Bektur, Yasin Taşdelen, Yüksel Kıvrak, Ayşe Hüseyinoglu Aydın
BACKGROUND AND AIM: Erectile dysfunction (ED) is the inability or insufficiensy of penile erection that causes dissatisfaction during sexual intercourse. ED is seen in patients with heart failure (HF) ranging from %56-81 depending on the severity. Patients usually blame their cardiovascular medications for their ED. Ivabradine is used for antianginal effects and to improve exercise intolerance and decrease mortality in patients with HF. Most beta-blockers are known to cause ED but unlike beta-blockers the effect of ivabradine over ED has never been evaluated...
May 25, 2017: Kardiologia Polska
https://www.readbyqxmd.com/read/28538257/what-s-in-the-literature
#18
Mark Bromberg, Nicholas J Silvestri, David Lacomis
In this edition, we provide a detailed summary of an informative book, "GBS100: Celebrating a Century of Progress in Guillain-Barré Syndrome" developed by the Peripheral Nerve Society to honor the centenary of the original paper on Guillain-Barré Syndrome. We also review various studies in myasthenia gravis including: management with rituximab; the efficacy of early fast-acting treatment with corticosteroids; and various dosing strategies for tacrolimus. Finally, we review new studies including: the potential pathogenesis, risk factors, and functional decline of patients with inclusion body myositis; MxA immunoreactivity in dermatomyositis; diagnostic approaches for evaluating patients with myalgia, fatigue, and exercise intolerance; MRI patterns in genetic muscle disease; and MRI as an outcome measure in facioscapulohumeral muscular dystrophy...
June 2017: Journal of Clinical Neuromuscular Disease
https://www.readbyqxmd.com/read/28522658/effect-of-fontan-geometry-on-exercise-haemodynamics-and-its-potential-implications
#19
Elaine Tang, Zhenglun Alan Wei, Kevin K Whitehead, Reza H Khiabani, Maria Restrepo, Lucia Mirabella, James Bethel, Stephen M Paridon, Bradley S Marino, Mark A Fogel, Ajit P Yoganathan
OBJECTIVE: Exercise intolerance afflicts Fontan patients with total cavopulmonary connections (TCPCs) causing a reduction in quality of life. Optimising TCPC design is hypothesised to have a beneficial effect on exercise capacity. This study investigates relationships between TCPC geometries and exercise haemodynamics and performance. METHODS: This study included 47 patients who completed metabolic exercise stress test with cardiac magnetic resonance (CMR). Phase-contrast CMR images were acquired immediately following supine lower limb exercise...
May 18, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28521807/case-report-a-novel-frameshift-mutation-in-the-mitochondrial-cytochrome-c-oxidase-ii-gene-causing-mitochondrial-disorder
#20
Laura Kytövuori, Mikko Kärppä, Hannu Tuominen, Johanna Uusimaa, Markku Saari, Reetta Hinttala, Kari Majamaa
BACKGROUND: Mitochondrial cytochrome c oxidase 2, MT-CO2, encodes one of the three subunits, which form the catalytic core of cytochrome c oxidase (COX), complex IV. Mutations in MT-CO2 are rare and the associated phenotypes are variable including nonsyndromic and syndromic forms of mitochondrial diseases. CASE PRESENTATION: We describe a 30-year-old man with cognitive decline, epilepsy, psychosis, exercise intolerance, sensorineural hearing impairment, retinitis pigmentosa, cataract and lactic acidosis...
May 18, 2017: BMC Neurology
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