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https://www.readbyqxmd.com/read/28431343/measurement-of-physical-activity-levels-in-the-intensive-care-unit-and-functional-outcomes-an-observational-study
#1
Lisa J Beach, Kate Fetterplace, Lara Edbrooke, Selina M Parry, Rachel Curtis, Thomas Rechnitzer, Sue Berney, Linda Denehy
PURPOSE: Primary aims were: (1) objectively quantify levels of physical activity with the sensewear armband mini-fly motion sensor (SWA-MF), (2) evaluate the correlation of SWA-MF measurement of active and resting energy expenditure against the ICU Mobility scale (IMS) and indirect calorimetry respectively. MATERIALS AND METHODS: Adults mechanically ventilated ≥48h and anticipated to remain in ICU≥5days were included. Physical activity (PA) was measured using a SWA-MF (over the first five days); energy expenditure was measured with both the SWA-MF and the Deltatrac II metabolic cart on day three; highest level of mobility was assessed on the IMS...
April 7, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28420298/prevalence-of-metabolic-syndrome-in-hiv-infected-patients-naive-to-antiretroviral-therapy-or-receiving-a-first-line-treatment
#2
Leonardo Calza, Vincenzo Colangeli, Eleonora Magistrelli, Nicolo' Rossi, Elena Rosselli Del Turco, Linda Bussini, Marco Borderi, Pierluigi Viale
BACKGROUND: The combination antiretroviral therapy (cART) has dramatically improved the life expectancy of patients with HIV infection, but may lead to several long-term metabolic abnormalities. However, data about the frequency of metabolic syndrome (MS) in HIV-infected people vary considerably across different observational studies. METHODS: The prevalence of MS among HIV-infected patients was evaluated by a cross-sectional study conducted among subjects naive to cART or receiving the first antiretroviral regimen and referring to our Clinics from January 2015 to December 2015...
April 19, 2017: HIV Clinical Trials
https://www.readbyqxmd.com/read/28358856/dexmedetomidine-ameliorates-muscle-wasting-and-attenuates-the-alteration-of-hypothalamic-neuropeptides-and-inflammation-in-endotoxemic-rats
#3
Minhua Cheng, Tao Gao, Fengchan Xi, Chun Cao, Yan Chen, Chenyan Zhao, Qiurong Li, Wenkui Yu
Dexmedetomidine is generally used for sedaton in critically ill, it could shorten duration of mechanical ventilation, ICU stay and lower basic metabolism. However, the exact mechanism of these positive effects remains unkown. Here we investigated the hypothesis that dexmedetomidine could ameliorate muscle wasting in endotoxemic rats and whether it was related to hypothalamic neuropeptides alteration and inflammation. Fourty-eight adult male Sprague-Dawley rats were intraperitoneally injected with lipopolysaccharide (LPS) (5 mg/kg) or saline, followed by 50 μg/kg dexmedetomidine or saline administration via the femoral vein catheter (infusion at 5 μg·kg-1·hr-1)...
2017: PloS One
https://www.readbyqxmd.com/read/28347724/metabolic-effects-of-intermittent-access-to-caloric-or-non-caloric-sweetened-solutions-in-mice-fed-a-high-caloric-diet
#4
Marion Soto, Catherine Chaumontet, Patrick C Even, Dalila Azzout-Marniche, Daniel Tomé, Gilles Fromentin
Human consumption of obesogenic diets and soft drinks, sweetened with different molecules, is increasing worldwide, and increases the risk of metabolic diseases. We hypothesized that the chronic consumption of caloric (sucrose, high-fructose corn syrup (HFCS), maltodextrin) and non-caloric (sucralose) solutions under 2-hour intermittent access, alongside the consumption of a high-fat high-sucrose diet, would result in differential obesity-associated metabolic abnormalities in mice. Male C57BL/6 mice had ad libitum access to an HFHS diet and to water (water control group)...
March 24, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28314964/increased-intake-of-energy-dense-diet-and-negative-energy-balance-in-a-mouse-model-of-chronic-psychosocial-defeat
#5
Roberto Coccurello, Adele Romano, Giacomo Giacovazzo, Bianca Tempesta, Marco Fiore, Anna Maria Giudetti, Ilaria Marrocco, Fabio Altieri, Anna Moles, Silvana Gaetani
PURPOSE: Chronic exposure to stress may represent a risk factor for developing metabolic and eating disorders, mostly driven by the overconsumption of easily accessible energy-dense palatable food, although the mechanisms involved remain still unclear. In this study, we used an ethologically oriented murine model of chronic stress caused by chronic psychosocial defeat (CPD) to investigate the effects of unrestricted access to a palatable high fat diet (HFD) on food intake, body weight, energy homeostasis, and expression of different brain neuropeptides...
March 17, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28302596/estimating-accuracy-at-exercise-intensities-a-comparative-study-of-self-monitoring-heart-rate-and-physical-activity-wearable-devices
#6
Erin E Dooley, Natalie M Golaszewski, John B Bartholomew
BACKGROUND: Physical activity tracking wearable devices have emerged as an increasingly popular method for consumers to assess their daily activity and calories expended. However, whether these wearable devices are valid at different levels of exercise intensity is unknown. OBJECTIVE: The objective of this study was to examine heart rate (HR) and energy expenditure (EE) validity of 3 popular wrist-worn activity monitors at different exercise intensities. METHODS: A total of 62 participants (females: 58%, 36/62; nonwhite: 47% [13/62 Hispanic, 8/62 Asian, 7/62 black/ African American, 1/62 other]) wore the Apple Watch, Fitbit Charge HR, and Garmin Forerunner 225...
March 16, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/28302065/lamivudine-dolutegravir-dual-therapy-in-hiv-infected-virologically-suppressed-patients
#7
Franco Maggiolo, Roberto Gulminetti, Layla Pagnucco, Margherita Digaetano, Simone Benatti, Daniela Valenti, Annapaola Callegaro, Diego Ripamonti, Cristina Mussini
BACKGROUND: Little is known about the applicability of dual treatments based on integrase inhibitors. We explored the combination of lamivudine + dolutegravir as an option when switching from standard cART in virologically suppressed patients. METHODS: In this prospective cohort we enrolled patients previously switched to 3TC + DTG who were 18 years or older, with no previous resistance mutations to the used drugs, having a HIV-RNA <50 copies/ml for 6 months or longer, negative for HBsAg and on a stable (>6 months) cART...
March 16, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28219696/irisin-in-goldfish-carassius-auratus-effects-of-irisin-injections-on-feeding-behavior-and-expression-of-appetite-regulators-uncoupling-proteins-and-lipoprotein-lipase-and-fasting-induced-changes-in-fndc5-expression
#8
Zahndra Diann Butt, Jessica Dalton Hackett, Hélène Volkoff
Irisin is a peptide cleaved from the fibronectin type III domain containing protein 5 (FNDC5) gene that is secreted predominantly by muscle cells but also by other tissues including brain and intestine. In mammals, irisin has been shown to have thermogenic actions via the modulation of uncoupling proteins (UCPs) and to affect feeding and energy homeostasis via actions in brain, adipose tissue, liver, muscle and gastrointestinal tract. To examine the role of irisin on feeding and metabolism in fish, the effects of peripheral (intraperitoneal) injections of irisin on feeding behavior, glucose levels and the mRNA expressions of appetite regulators (cocaine and amphetamine regulated transcript CART, agouti related protein AgRP, orexin), UCPs and lipoprotein lipase LPL and brain factors (brain-derived neurotrophic factor , BDNF and tyrosine hydroxylase TH) were assessed in brain, white muscle and intestine...
February 20, 2017: Peptides
https://www.readbyqxmd.com/read/28179805/a-new-whole-room-indirect-calorimeter-for-measurement-of-the-energetics-of-exercise
#9
Russell Rising, Kathryn Whyte, Jeanine Albu, Xavier Pi-Sunyer
The purpose of this study was to compare the accuracy of exercise energy expenditure (EXEE) measurements from a metabolic cart (HG_MC) to that obtained with a new exercise whole room indirect calorimeter (EX_WRIC). First, the HG_MC and the EX_WRIC were subjected to 10, 30-min ethanol (99.8% purity) and propane (99.5% purity) combustion validations, respectively, for EE, ventilation rates (liters) of oxygen (VO2), carbon dioxide (VCO2), and the respiratory quotient (RQ; VCO2/VO2). Then, 15 healthy adults (13 men and 2 women) cycled at 65% age predicted heart rate max for random determination of their EXEE, VO2, VCO2 and RQ after a 12-hr fast with both the HG-MC and EX_WRIC...
December 2016: Journal of Exercise Physiology Online
https://www.readbyqxmd.com/read/28108333/determining-activity-count-cut-points-for-measurement-of-physical-activity-using-the-actiwatch2-accelerometer
#10
Sarah E Neil-Sztramko, Bolette Skjødt Rafn, Carolyn C Gotay, Kristin L Campbell
STUDY OBJECTIVES: Sleep and physical activity are important contributors to many aspects of health. Obtaining accurate, objective measures of both behaviours is critical to health research. The Actiwatch2 is a wrist-worn sleep-monitoring device that has the potential to measure physical activity. Currently, interpretation of the Actiwatch2 physical activity data is limited by a lack of published thresholds for interpreting exercise intensity. This limits the ability to collect information on both behaviours simultaneously using one monitor...
January 17, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28077069/a-pilot-study-of-brisk-walking-in-sedentary-combination-antiretroviral-treatement-cart-treated-patients-benefit-on-soluble-and-cell-inflammatory-markers
#11
Matteo Bonato, Laura Galli, Laura Passeri, Valeria Longo, Gaspare Pavei, Simona Bossolasco, Cecilia Bertocchi, Massimo Cernuschi, Giuseppe Balconi, Giampiero Merati, Adriano Lazzarin, Antonio La Torre, Paola Cinque
BACKGROUND: Chronic HIV infection is associated with low-level inflammation and increased risk of chronic diseases and mortality. The objective was to assess the effects of moderate intensity exercise on metabolic and inflammatory markers in HIV-infected treated persons. METHODS: This was a pilot study enrolling cART-treated, sedentary persons with metabolic complications in a 12-week protocol, consisting of three sessions per week of 60 min brisk walking with (strength-walk group) or without (walk group) 30 min circuit-training...
January 11, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28027925/impact-of-prebiotics-on-metabolic-and-behavioral-alterations-in-a-mouse-model-of-metabolic-syndrome
#12
Lourdes Fernández de Cossío, Célia Fourrier, Julie Sauvant, Amandine Everard, Lucile Capuron, Patrice D Cani, Sophie Layé, Nathalie Castanon
Mounting evidence shows that the gut microbiota, an important player within the gut-brain communication axis, can affect metabolism, inflammation, brain function and behavior. Interestingly, gut microbiota composition is known to be altered in patients with metabolic syndrome (MetS), who also often display neuropsychiatric symptoms. The use of prebiotics, which beneficially alters the microbiota, may therefore be a promising way to potentially improve physical and mental health in MetS patients. This hypothesis was tested in a mouse model of MetS, namely the obese and type-2 diabetic db/db mice, which display emotional and cognitive alterations associated with changes in gut microbiota composition and hippocampal inflammation compared to their lean db/+ littermates...
December 24, 2016: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/27940957/magnetic-resonance-augmented-cardiopulmonary-exercise-testing-comprehensively-assessing-exercise-intolerance-in-children-with-cardiovascular-disease
#13
Nathaniel J Barber, Emmanuel O Ako, Gregorz T Kowalik, Mun H Cheang, Bejal Pandya, Jennifer A Steeden, Shahin Moledina, Vivek Muthurangu
BACKGROUND: Conventional cardiopulmonary exercise testing can objectively measure exercise intolerance but cannot provide comprehensive evaluation of physiology. This requires additional assessment of cardiac output and arteriovenous oxygen content difference. We developed magnetic resonance (MR)-augmented cardiopulmonary exercise testing to achieve this goal and assessed children with right heart disease. METHODS AND RESULTS: Healthy controls (n=10) and children with pulmonary arterial hypertension (PAH; n=10) and repaired tetralogy of Fallot (n=10) underwent MR-augmented cardiopulmonary exercise testing...
December 2016: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27906073/gut-barrier-structure-mucosal-immunity-and-intestinal-microbiota-in-the-pathogenesis-and-treatment-of-hiv-infection
#14
REVIEW
Camilla Tincati, Daniel C Douek, Giulia Marchetti
Over the past 10 years, extensive work has been carried out in the field of microbial translocation in HIV infection, ranging from studies on its clinical significance to investigations on its pathogenic features. In the present work, we review the most recent findings on this phenomenon, focusing on the predictive role of microbial translocation in HIV-related morbidity and mortality, the mechanisms by which it arises and potential therapeutic approaches. From a clinical perspective, current work has shown that markers of microbial translocation may be useful in predicting clinical events in untreated HIV infection, while conflicting data exist on their role in cART-experienced subjects, possibly due to the inclusion of extremely varied patient populations in cohort studies...
April 11, 2016: AIDS Research and Therapy
https://www.readbyqxmd.com/read/27906007/what-happens-to-cardiovascular-system-behind-the-undetectable-level-of-hiv-viremia
#15
REVIEW
Gabriella d'Ettorre, Giancarlo Ceccarelli, Paolo Pavone, Pietro Vittozzi, Gabriella De Girolamo, Ivan Schietroma, Sara Serafino, Noemi Giustini, Vincenzo Vullo
Despite the combined antiretroviral therapy has improved the length and quality of life of HIV infected patients, the survival of these patients is always decreased compared with the general population. This is the consequence of non-infectious illnesses including cardio vascular diseases. In fact large studies have indicated an increased risk of coronary atherosclerotic disease, myocardial infarction even in HIV patients on cART. In HIV infected patients several factors may contribute to the pathogenesis of cardiovascular problems: life-style, metabolic parameters, genetic predisposition, viral factors, immune activation, chronic inflammation and side effects of antiretroviral therapy...
April 27, 2016: AIDS Research and Therapy
https://www.readbyqxmd.com/read/27869500/lower-frailty-is-associated-with-successful-cognitive-aging-among-older-adults-with-hiv
#16
Lindsay M K Wallace, Maria Ferrara, Thomas D Brothers, Sara Garlassi, Susan A Kirkland, Olga Theou, Stefano Zona, Cristina Mussini, David Moore, Kenneth Rockwood, Giovanni Guaraldi
Aging with HIV poses unique and complex challenges, including avoidance of neurocognitive disorder. Our objective here is to identify the prevalence and predictors of successful cognitive aging (SCA) in a sample of older adults with HIV. One hundred three HIV-infected individuals aged 50 and older were recruited from the Modena HIV Metabolic Clinic in Italy. Participants were treated with combination antiretroviral therapy for at least 1 year and had suppressed plasma HIV viral load. SCA was defined as the absence of neurocognitive impairment (as defined by deficits in tasks of episodic learning, information processing speed, executive function, and motor skills) depression, and functional impairment (instrumental activities of daily living)...
February 2017: AIDS Research and Human Retroviruses
https://www.readbyqxmd.com/read/27822503/levels-of-cocaine-and-amphetamine-regulated-transcript-in-vagal-afferents-in-the-mouse-are-unaltered-in-response-to-metabolic-challenges
#17
Xuefeng Yuan, Ying Huang, Sarita Shah, Hua Wu, Laurent Gautron
Cocaine- and amphetamine-regulated transcript (CART) is one of the most abundant neuropeptides in vagal afferents, including those involved in regulating feeding. Recent observations indicate that metabolic challenges dramatically alter the neuropeptidergic profile of CART-producing vagal afferents. Here, using confocal microscopy, we reassessed the distribution and regulation of CART(55-102) immunoreactivity in vagal afferents of the male mouse in response to metabolic challenges, including fasting and high-fat-diet feeding...
September 2016: ENeuro
https://www.readbyqxmd.com/read/27804278/mycobacterium-smegmatis-is-a-suitable-cell-factory-for-the-production-of-steroidic-synthons
#18
Beatriz Galán, Iria Uhía, Esther García-Fernández, Igor Martínez, Esther Bahíllo, Juan L de la Fuente, José L Barredo, Lorena Fernández-Cabezón, José L García
A number of pharmaceutical steroid synthons are currently produced through the microbial side-chain cleavage of natural sterols as an alternative to multi-step chemical synthesis. Industrially, these synthons have been usually produced through fermentative processes using environmental isolated microorganisms or their conventional mutants. Mycobacterium smegmatis mc(2) 155 is a model organism for tuberculosis studies which uses cholesterol as the sole carbon and energy source for growth, as other mycobacterial strains...
January 2017: Microbial Biotechnology
https://www.readbyqxmd.com/read/27801599/is-v%C3%AC-o2-supressed-during-nonapnoeic-facial-submersion
#19
COMPARATIVE STUDY
Sarah Anderson, Maggie R Chamberlain, Samantha Musgrove, Antonia Partusch, Keagan R J Tice, David B Thorp
The mammalian dive response (DR) is described as oxygen-conserving based on measures of bradycardia, peripheral vasoconstriction, and decreased ventilation (V̇E). Using a model of simulated diving, this study examined the effect of nonapnoeic facial submersions (NAFS) on oxygen consumption (V̇O2). 19 participants performed four 2-min NAFS with 8 min of rest between each. Two submersions were performed in 5 °C water, 2 in 25 °C water. Heart rate (HR) was collected using chest strap monitors. A tube connected to the inspired port of a non-rebreathing valve allowed participants to breathe during facial submersion...
November 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/27747786/potential-effects-on-cardiorespiratory-and-metabolic-status-after-a-concurrent-strength-and-endurance-training-program-in-diabetes-patients-a-randomized-controlled-trial
#20
Daniela Bassi, Renata Gonçalves Mendes, Vivian Maria Arakelian, Flávia Cristina Rossi Caruso, Ramona Cabiddu, José Carlos Bonjorno Júnior, Ross Arena, Audrey Borghi-Silva
BACKGROUND: Concurrent aerobic and resistance training (CART) programs have been widely recommended as an important strategy to improve physiologic and functional performance in patients with chronic diseases. However, the impact of a personalized CART program in patients with type 2 diabetes (T2D) requires investigation. Therefore, the primary aim of the current study is to investigate the impact of CART programs on metabolic profile, glycemic control, and exercise capacity in patients with diabetes...
December 2016: Sports Medicine—Open
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