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https://www.readbyqxmd.com/read/28548545/mild-chronic-obstructive-pulmonary-disease-why-spirometry-is-not-sufficient
#1
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...
May 26, 2017: Expert Review of Respiratory Medicine
https://www.readbyqxmd.com/read/28530858/customizing-alarm-limits-based-on-specific-needs-of-patients
#2
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
#3
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
#4
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
#5
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
#6
Fernando S Ramalho, Aparecida Y Yamamoto, Luis L da Silva, Luiz Tm Figueiredo, Lenaldo B Rocha, Luciano Neder, Sara R Teixeira, Letícia A Apolinário, Leandra Nz Ramalho, Deisy M Silva, Conrado M Coutinho, Patrícia P Melli, Marlei J Augusto, Ligia B Santoro, Geraldo Duarte, Marisa M Mussi-Pinhata
We reported two 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 the ZIKV RNA.
April 21, 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
#7
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
#8
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 (COPD). It is no surprise, therefore, that a major goal of management is to improve IC by reducing lung hyperinflation in order to improve respiratory symptoms and health-related quality of life. The negative effects of lung hyperinflation on respiratory muscle and cardio-circulatory function during exercise are now well established...
April 11, 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
#9
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
https://www.readbyqxmd.com/read/28368706/resting-physiological-correlates-of-reduced-exercise-capacity-in-smokers-with-mild-airway-obstruction
#10
Amany F Elbehairy, Azmy Faisal, Jordan A Guenette, Dennis Jensen, Katherine A Webb, Rashid Ahmed, J Alberto Neder, Denis E O'Donnell
Smokers with minor spirometric abnormalities can experience persistent activity-related dyspnea and exercise intolerance. Additional resting tests can expose heterogeneous physiological abnormalities, but their relevance and association with clinical outcomes remain uncertain. Subjects included sixty-two smokers (≥20 pack-years), with cough and/or dyspnea and minor airway obstruction [forced expiratory volume in one-second (FEV1) ≥80% predicted and >5th percentile lower limit of normal (LLN) (i.e., z-score >-1...
April 3, 2017: COPD
https://www.readbyqxmd.com/read/28352116/atomic-level-structural-correlations-across-the-morphotropic-phase-boundary-of-a-ferroelectric-solid-solution-xbimg1-2ti1-2o3-1%C3%A2-%C3%A2-x-pbtio3
#11
Kaustuv Datta, Reinhard B Neder, Jun Chen, Joerg C Neuefeind, Boriana Mihailova
Revelation of unequivocal structural information at the atomic level for complex systems is uniquely important for deeper and generic understanding of the structure property connections and a key challenge in materials science. Here we report an experimental study of the local structure by applying total elastic scattering and Raman scattering analyses to an important non-relaxor ferroelectric solid solution exhibiting the so-called composition-induced morphotropic phase boundary (MPB), where concomitant enhancement of physical properties have been detected...
March 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28345959/ventilatory-inefficiency-and-exertional-dyspnea-in-early-chronic-obstructive-pulmonary-disease
#12
J Alberto Neder, Danilo C Berton, Paulo de Tarso Müller, Amany F Elbehairy, Alcides Rocha, Paolo Palange, Denis E O'Donnell
Exertional dyspnea is present across the spectrum of chronic obstructive pulmonary disease (COPD) severity. However, without realizing it themselves, patients may decrease daily physical activity to avoid distressing respiratory sensations. Dyspnea also may be associated with deconditioning. Cardiopulmonary exercise testing can uncover exertional dyspnea and its physiological determinants in patients with preserved or only mildly-reduced FEV1. Dyspnea in mild COPD can largely be explained by increased "wasted" ventilation in the physiological dead space which heightens the drive to breathe and worsens the inspiratory mechanical constraints...
March 27, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28326005/bioactivity-of-food-peptides-biological-response-of-rats-to-bovine-milk-whey-peptides-following-acute-exercise
#13
Carolina Soares Moura, Pablo Christiano Barboza Lollo, Priscila Neder Morato, Eder Muller Risso, Jaime Amaya-Farfan
Background: Several physiologically beneficial effects of consuming a whey protein hydrolysate (WPH) have been attributed to the greater availability of bioactive peptides. Aims: The aim was to investigate the effect of four branched-chain amino acid- (BCAA-)containing dipeptides, present in WPH, on immune modulation, stimulation of HSP expression, muscle protein synthesis, glycogen content, satiety signals and the impact of these peptides on the plasma free amino acid profiles. Methods: The animals were divided in groups: control (rest, without gavage), vehicle (water), L-isoleucyl-L-leucine (lle-Leu), L-leucyl-L-isoleucine (Leu-lle), L-valyl-Lleucine (Val-Leu), L-leucyl-L-valine (Leu-Val) and WPH...
2017: Food & Nutrition Research
https://www.readbyqxmd.com/read/28302031/hif1a-is-overexpressed-in-medulloblastoma-and-its-inhibition-reduces-proliferation-and-increases-epas1-and-atg16l1-methylation
#14
Gustavo Alencastro Veiga Cruzeiro, Maristella Bergamo Dos Reis, Vanessa Silva Silveira, Régia Caroline Peixoto Lira, Carlos Gilberto Carlotti, Luciano Neder, Ricardo Santos Oliveira, José Andres Yunes, Silvia Regina Brandalise, Simone Aguiar, Agda Karina Eterovic, Luiz Gonzaga Tone, Carlos Alberto Scrideli, Elvis Terci Valera
BACKGROUND: Genetic and epigenetic modifications are closely related to tumor initiation and progression and can provide guidance for understanding tumor functioning, potentially leading to the discovery of new therapies. Studies have associated hypoxia-related genes to tumor progression and chemo/radioresistance in brain tumors. Information on the expression profile of hypoxia-related genes in pediatric medulloblastoma, although scarce, may reveal relevant information that could support treatment decisions...
March 15, 2017: Current Cancer Drug Targets
https://www.readbyqxmd.com/read/28296432/improving-clinical-alarm-management-guidance-and-strategies
#15
Pam Cosper, Mary Zellinger, Allen Enebo, Samantha Jacques, Lynn Razzano, Marilyn Neder Flack
This article focuses on the type of problems that lead to false or nonactionable clinical alarms and the type of data that can help identify which of these alarms are most prevalent in specific units in healthcare facilities. The process of identifying necessary data is first described, as this activity will drive later choices on capturing data. This article also discusses how to use the data collected in alarm reports to help determine which alarms should be targeted first for improved management in a pilot environment...
March 2017: Biomedical Instrumentation & Technology
https://www.readbyqxmd.com/read/28283778/plk1-associated-micrornas-are-correlated-with-pediatric-medulloblastoma-prognosis
#16
Julia Alejandra Pezuk, María Sol Brassesco, Ricardo Santos de Oliveira, Hélio Rubens Machado, Luciano Neder, Carlos Alberto Scrideli, Luiz Gonzaga Tone
PURPOSE: Medulloblastoma (MB) is the most common malignant tumor of the central nervous system (CNS) in children. Despite its relative good survival rates, treatment can cause long time sequels and may impair patients' lifespan and quality, making the search for new treatment options still necessary. Polo like kinases (PLKs) constitute a five-member serine/threonine kinases family (PLK 1-5) that regulates different stages during cell cycle. Abnormal PLKs expression has been observed in several cancer types, including MB...
April 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28275353/advances-in-the-evaluation-of-respiratory-pathophysiology-during-exercise-in-chronic-lung-diseases
#17
REVIEW
Denis E O'Donnell, Amany F Elbehairy, Danilo C Berton, Nicolle J Domnik, J Alberto Neder
Dyspnea and exercise limitation are among the most common symptoms experienced by patients with various chronic lung diseases and are linked to poor quality of life. Our understanding of the source and nature of perceived respiratory discomfort and exercise intolerance in chronic lung diseases has increased substantially in recent years. These new mechanistic insights are the primary focus of the current review. Cardiopulmonary exercise testing (CPET) provides a unique opportunity to objectively evaluate the ability of the respiratory system to respond to imposed incremental physiological stress...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28275174/physiological-and-clinical-relevance-of-exercise-ventilatory-efficiency-in-copd
#18
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/28259231/zika-virus-meningoencephalitis-in-an-immunocompromised-patient
#19
Pedro V Schwartzmann, Leandra N Z Ramalho, Luciano Neder, Fernando C Vilar, Sílvia M Ayub-Ferreira, Marília F Romeiro, Osvaldo M Takayanagui, Antonio C Dos Santos, André Schmidt, Luiz T M Figueiredo, Ross Arena, Marcus V Simões
The World Health Organization considers the Zika virus (ZIKV) outbreak in the Americas a global public health emergency. The neurologic complications due to ZIKV infection comprise microcephaly, meningoencephalitis, and Guillain-Barré syndrome. We describe a fatal case of an adult patient receiving an immunosuppressive regimen following heart transplant. The patient was admitted with acute neurologic impairment and experienced progressive hemodynamic instability and mental deterioration that finally culminated in death...
March 2017: Mayo Clinic Proceedings
https://www.readbyqxmd.com/read/28255088/oral-n-acetylcysteine-and-exercise-tolerance-in-mild-chronic-obstructive-pulmonary-disease
#20
Daniel M Hirai, Joshua H Jones, Joel T Zelt, Marianne L da Silva, Robert F Bentley, Brittany Ann Edgett, Brendon James Gurd, Michael E Tschakovsky, Denis E O'Donnell, J Alberto Neder
Heightened oxidative stress is implicated in the progressive impairment of skeletal muscle vascular and mitochondrial function in chronic obstructive pulmonary disease (COPD). Whether accumulation of reactive oxygen species contribute to exercise intolerance in the early stages of COPD is unknown. We examined the effects of oral antioxidant treatment with N-acetylcysteine (NAC) on respiratory, cardiovascular and locomotor muscle function and exercise tolerance in patients with mild COPD. Thirteen patients with forced expiratory volume in one second and forced vital capacity ratio (FEV1/FVC) < lower limit of normal (LLN) and FEV1 ≥ LLN were enrolled in a double-blind, randomized crossover study to receive NAC (1800 mg/day) or placebo for 4 days...
March 2, 2017: Journal of Applied Physiology
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