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https://www.readbyqxmd.com/read/28993264/sensory-mechanical-effects-of-a-dual-bronchodilator-and-its-anticholinergic-component-in-copd
#1
Denis E O'Donnell, Amany F Elbehairy, Azmy Faisal, J Alberto Neder, Katherine A Webb
This randomized, double-blind, crossover study examined the physiological rationale for using a dual long-acting bronchodilator (umeclidinium/vilanterol (UME/VIL)) versus its muscarinic-antagonist component (UME) as treatment for dyspnea and exercise intolerance in moderate COPD. After each 4-week treatment period, subjects performed pulmonary function and symptom-limited constant-work rate cycling tests with diaphragm electromyogram (EMGdi), esophageal (Pes), gastric (Pga) and transdiaphragmatic (Pdi) pressure measurements...
October 7, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28977120/a-practical-approach-to-assess-leg-muscle-oxygenation-during-ramp-incremental-cycle-ergometry-in-heart-failure
#2
A C Barroco, P A Sperandio, M Reis, D R Almeida, J A Neder
Heart failure is characterized by the inability of the cardiovascular system to maintain oxygen (O2) delivery (i.e., muscle blood flow in non-hypoxemic patients) to meet O2 demands. The resulting increase in fractional O2 extraction can be non-invasively tracked by deoxygenated hemoglobin concentration (deoxi-Hb) as measured by near-infrared spectroscopy (NIRS). We aimed to establish a simplified approach to extract deoxi-Hb-based indices of impaired muscle O2 delivery during rapidly-incrementing exercise in heart failure...
October 2, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28973727/diallel-analysis-for-technological-traits-in-upland-cotton
#3
D R Queiroz, F J C Farias, J J V Cavalcanti, L P Carvalho, D G Neder, L S S Souza, F C Farias, P E Teodoro
Final cotton quality is of great importance, and it depends on intrinsic and extrinsic fiber characteristics. The objective of this study was to estimate general (GCA) and specific (SCA) combining abilities for technological fiber traits among six upland cotton genotypes and their fifteen hybrid combinations, as well as to determine the effective genetic effects in controlling the traits evaluated. In 2015, six cotton genotypes: FM 993, CNPA 04-2080, PSC 355, TAM B 139-17, IAC 26, and TAMCOT-CAMD-E and fifteen hybrid combinations were evaluated at the Experimental Station of Embrapa Algodão, located in Patos, PB, Brazil...
September 21, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28894477/clinical-exercise-testing-basic%C3%A2-principles-and-practice
#4
EDITORIAL
Pierantonio Laveneziana, Susan Ward, J Alberto Neder, Vitalii Poberezhets
Faculty and delegates of an @ERStalk course on clinical exercise testing describe their experiences http://ow.ly/dPwB30dxr8v.
September 2017: Breathe
https://www.readbyqxmd.com/read/28862164/close-packed-structure-dynamics-with-finite-range-interaction-computational-mechanics-with-individual-layer-interaction
#5
Edwin Rodriguez-Horta, Ernesto Estevez-Rams, Raimundo Lora-Serrano, Reinhard Neder
This is the second contribution in a series of papers dealing with dynamical models in equilibrium theories of polytypism. A Hamiltonian introduced by Ahmad & Khan [Phys. Status Solidi B (2000), 218, 425-430] avoids the unphysical assignment of interaction terms to fictitious entities given by spins in the Hägg coding of the stacking arrangement. In this paper an analysis of polytype generation and disorder in close-packed structures is made for such a Hamiltonian. Results are compared with a previous analysis using the Ising model...
September 1, 2017: Acta Crystallographica. Section A, Foundations and Advances
https://www.readbyqxmd.com/read/28812766/modulatory-effects-of-arginine-glutamine-and-branched-chain-amino-acids-on-heat-shock-proteins-immunity-and-antioxidant-response-in-exercised-rats
#6
Carolina Soares Moura, Pablo Christiano Barboza Lollo, Priscila Neder Morato, Eder Muller Risso, Jaime Amaya-Farfan
Heat shock proteins (HSPs) are endogenous proteins whose function is to maintain the cell's tolerance to insult, and glutamine supplementation is known to increase HSP expression during intense exercise. Since few studies have addressed the possibility that supplementation with other amino acids could have similar effects to that of glutamine, our objective was to evaluate the effects of leucine, valine, isoleucine and arginine as potential stimulators of HSPs 25, 60, 70 and 90 in rats subjected to acute exercise as a stressing factor...
September 20, 2017: Food & Function
https://www.readbyqxmd.com/read/28665692/excess-ventilation-in-copd-heart-failure-overlap-implications-for-dyspnea-and-exercise-intolerance
#7
Alcides Rocha, Flavio F Arbex, Priscilla A Sperandio, Aline Souza, Ligia Biazzim, Frederico Mancuso, Danilo C Berton, Bruno Hochhegger, Maria Clara N Alencar, Luiz E Nery, Denis E O'Donnell, J Alberto Neder
BACKGROUND: An increased ventilatory response to exertional metabolic demand (high ventilation (⩒E)-carbon dioxide output (⩒CO2) relationship) is a common finding in patients with coexistent COPD-heart failure. We aimed to determine the mechanisms underlying high ⩒E-⩒CO2 and its impact on operating lung volumes, dyspnea and exercise tolerance in these patients. METHODS: Twenty-two ex-smokers with combined COPD and heart failure with reduced left ventricular ejection fraction (LVEF) undertook, after careful treatment optimization, a progressive cycle exercise test with capillary (c) blood gas collection...
June 30, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28660867/close-packed-structures-with-finite-range-interaction-computational-mechanics-of-layer-pair-interaction
#8
Edwin Rodriguez-Horta, Ernesto Estevez-Rams, Reinhard Neder, Raimundo Lora-Serrano
The stacking problem is approached by computational mechanics, using an Ising next-nearest-neighbour model. Computational mechanics allows one to treat the stacking arrangement as an information processing system in the light of a symbol-generating process. A general method for solving the stochastic matrix of the random Gibbs field is presented and then applied to the problem at hand. The corresponding phase diagram is then discussed in terms of the underlying ℇ-machine, or optimal finite-state machine. The occurrence of higher-order polytypes at the borders of the phase diagram is also analysed...
July 1, 2017: Acta Crystallographica. Section A, Foundations and Advances
https://www.readbyqxmd.com/read/28562788/economic-valuation-of-the-ecosystem-services-provided-by-a-protected-area-in-the-brazilian-cerrado-application-of-the-contingent-valuation-method
#9
F M Resende, G W Fernandes, D C Andrade, H D Néder
Considering that the economic valuation of ecosystem services is a useful approach to support the conservation of natural areas, we aimed to estimate the monetary value of the benefits provided by a protected area in southeast Brazil, the Serra do Cipó National Park. We calculated the visitor's willingness to pay to conserve the ecosystems of the protected area using the contingent valuation method. Located in a region under intense anthropogenic pressure, the Serra do Cipó National Park is mostly composed of rupestrian grassland ecosystems, in addition to other Cerrado physiognomies...
November 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28562736/bariatric-surgery-as-a-treatment-for-pseudotumor-cerebri-case-study-and-narrative-review-of-the-literature
#10
Everton Cazzo, Martinho Antonio Gestic, Murillo Pimentel Utrini, Felipe David Mendonça Chaim, Fábio Henrique Mendonça Chaim, Elaine Cristina Cândido, Luciana Bueno da Silveira Jarolavsky, Ana Maria Neder de Almeida, José Carlos Pareja, Elinton Adami Chaim
CONTEXT: Pseudotumor cerebri occurs when there is an increase in intracranial pressure without an underlying cause, usually leading to loss of vision. It is most commonly observed in obese women of child-bearing age. CASE REPORT: A 46-year-old woman presented at our service with idiopathic intracranial hypertension that had been diagnosed two years earlier, which had led to chronic refractory headache and an estimated 30% loss of visual acuity, associated with bilateral papilledema...
May 29, 2017: São Paulo Medical Journal, Revista Paulista de Medicina
https://www.readbyqxmd.com/read/28558953/are-heart-rate-dynamics-in-the-transition-from-rest-to-submaximal-exercise-related-to-maximal-cardiorespiratory-responses-in-copd
#11
Adriana Mazzuco, Wladimir Musetti Medeiros, Aline Soares de Souza, Maria Clara Noman Alencar, José Alberto Neder, Audrey Borghi-Silva
BACKGROUND: Poor exercise capacity is an important negative prognostic marker in patients with chronic obstructive pulmonary disease (COPD). Heart rate variability (HRV) responses can indicate alterations in cardiac autonomic control. Nevertheless, it remains unclear whether these abnormalities are related to cardiorespiratory responses to exercise in these patients. OBJECTIVE: To evaluate whether HRV at rest and submaximal exercise are related to impaired cardiopulmonary responses to exercise in COPD patients...
July 2017: Brazilian Journal of Physical Therapy
https://www.readbyqxmd.com/read/28548545/mild-chronic-obstructive-pulmonary-disease-why-spirometry-is-not-sufficient
#12
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...
July 2017: Expert Review of Respiratory Medicine
https://www.readbyqxmd.com/read/28530858/customizing-alarm-limits-based-on-specific-needs-of-patients
#13
Maria Cvach, Melanie Kitchens, Kevin Smith, Patricia Harris, Marilyn Neder Flack
No abstract text is available yet for this article.
May 2017: Biomedical Instrumentation & Technology
https://www.readbyqxmd.com/read/28492719/does-aortic-valve-repair-in-valve-sparing-aortic-root-reconstruction-compromise-the-longevity-of-the-procedure
#14
Ricardo Ribeiro Dias, José Augusto Duncan, Fabrício José de Souza Dinato, Lucas Lacerda Araújo, Hugo Monteiro Neder Issa, Fábio Fernandes, Charles Mady, Fábio Biscegli Jatene
OBJECTIVES: The effect of performing aortic valve repair in combination with valve-sparing operation on the length of time for which patients are free from reoperation is unclear. The objective of this study was to determine if the performance of aortic valve repair during valve-sparing operation modified the freedom from reoperation time. METHODS: From January 2003 to July 2014, 78 patients with a mean age of 49±15 years underwent valve-sparing operation. Sixty-eight percent of these patients were male...
April 2017: Clinics
https://www.readbyqxmd.com/read/28489139/high-expression-of-anti-apoptotic-genes-in-grade-i-and-ii-meningiomas
#15
Daniela Pretti da Cunha Tirapelli, Sarah Bomfim Menezes, Indira Maynart Franco, Isis Lacrose Lustosa, Andressa Romualdo Rodrigues, Paulo Cézar Novais, Antônio César Mendes Santiago, Fernanda Maris Peria, Luciano Neder Serafini, Alexandre Magno da Nóbrega Marinho, Carlos Gilberto Carlotti, Benedicto Oscar Colli, Luís Fernando Tirapelli
Objective: To evaluate the expression of c-FLIP, XIAP, Bcl-2, caspase 3, 8 and 9, cytochrome c, APAF 1 and Smac/DIABLO genes related to apoptosis pathways. Methods: The gene expression was evaluated in 30 meningiomas (WHO grades I and II) and in 10 normal samples (from arachnoid tissue) through PCR-RT. Results: The results showed higher expression of anti-apoptotic genes in meningiomas when compared to the control group, which had a low expression of pro-apoptotic genes...
April 2017: Arquivos de Neuro-psiquiatria
https://www.readbyqxmd.com/read/28447594/diffuse-single-crystal-scattering-corrected-for-molecular-form-factor-effects
#16
Ella Schmidt, Reinhard B Neder
This paper shows that chemical short-range order in two-component molecular crystals can be solved directly by separating the influence of the molecular form factor from the diffraction pattern. This novel technique is demonstrated by analysing the diffuse scattering of tris-tert-butyl-1,3,5-benzene tricarboxamide.
May 1, 2017: Acta Crystallographica. Section A, Foundations and Advances
https://www.readbyqxmd.com/read/28444144/congenital-zika-virus-infection-induces-severe-spinal-cord-injury
#17
Fernando S Ramalho, Aparecida Y Yamamoto, Luis L da Silva, Luiz T M Figueiredo, Lenaldo B Rocha, Luciano Neder, Sara R Teixeira, Letícia A Apolinário, Leandra N Z Ramalho, Deisy M Silva, Conrado M Coutinho, Patrícia P Melli, Marlei J Augusto, Ligia B Santoro, Geraldo Duarte, Marisa M Mussi-Pinhata
We report 2 fatal cases of congenital Zika virus (ZIKV) infection. Brain anomalies, including atrophy of the cerebral cortex and brainstem, and cerebellar aplasia were observed. The spinal cord showed architectural distortion, severe neuronal loss, and microcalcifications. The ZIKV proteins and flavivirus-like particles were detected in cytoplasm of spinal neurons, and spinal cord samples were positive for ZIKV RNA.
August 15, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28443951/bariatric-surgery-in-individuals-with-severe-cognitive-impairment-report-of-two-cases
#18
Everton Cazzo, Martinho Antonio Gestic, Murillo Pimentel Utrini, Felipe David Mendonça Chaim, Elaine Cristina Cândido, Luciana Bueno da Silveira Jarolavsky, Ana Maria Neder de Almeida, José Carlos Pareja, Elinton Adami Chaim
CONTEXT: Bariatric surgery has become the gold-standard treatment for refractory morbid obesity. Obesity is frequently associated with certain syndromes that include coexisting cognitive deficits. However, the outcomes from bariatric surgery in this group of individuals remain incompletely determined. CASE REPORT: A 25-year-old male with Prader-Willi syndrome, whose intelligence quotient (IQ) was 54, was admitted with a body mass index (BMI) of 55 kg/m2, associated with glucose intolerance...
April 20, 2017: São Paulo Medical Journal, Revista Paulista de Medicina
https://www.readbyqxmd.com/read/28398073/the-link-between-reduced-inspiratory-capacity-and-exercise-intolerance-in-chronic-obstructive-pulmonary-disease
#19
Denis E O'Donnell, Amany F Elbehairy, Katherine A Webb, J Alberto Neder
Low inspiratory capacity (IC), chronic dyspnea, and reduced exercise capacity are inextricably linked and are independent predictors of increased mortality in chronic obstructive pulmonary disease. It is no surprise, therefore, that a major goal of management is to improve IC by reducing lung hyperinflation to improve respiratory symptoms and health-related quality of life. The negative effects of lung hyperinflation on respiratory muscle and cardiocirculatory function during exercise are now well established...
July 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28378638/expression-signatures-of-dna-repair-genes-correlate-with-survival-prognosis-of-astrocytoma-patients
#20
Juliana Ferreira de Sousa, Raul Torrieri, Rodolfo Bortolozo Serafim, Luis Fernando Macedo Di Cristofaro, Fábio Dalbon Escanfella, Rodrigo Ribeiro, Dalila Lucíola Zanette, Maria Luisa Paçó-Larson, Wilson Araujo da Silva, Daniela Pretti da Cunha Tirapelli, Luciano Neder, Carlos Gilberto Carlotti, Valeria Valente
Astrocytomas are the most common primary brain tumors. They are very resistant to therapies and usually progress rapidly to high-grade lesions. Here, we investigated the potential role of DNA repair genes in astrocytoma progression and resistance. To this aim, we performed a polymerase chain reaction array-based analysis focused on DNA repair genes and searched for correlations between expression patters and survival prognoses. We found 19 genes significantly altered. Combining these genes in all possible arrangements, we found 421 expression signatures strongly associated with poor survival...
April 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
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