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https://www.readbyqxmd.com/read/28637270/in-planta-recapitulation-of-isoprene-synthases-evolution-from-ocimene-synthases
#1
Mingai Li, Jia Xu, Alberto Algarra Alarcon, Silvia Carlin, Enrico Barbaro, Luca Cappellin, Violeta Velikova, Urska Vrhovsek, Francesco Loreto, Claudio Varotto
Isoprene is the most abundant biogenic volatile hydrocarbon compound naturally emitted by plants and plays a major role in atmospheric chemistry. It has been proposed that isoprene synthases (IspS) may readily evolve from other terpene synthases, but this hypothesis has not been experimentally investigated.We isolated and functionally validated in Arabidopsis the first isoprene synthase gene, AdoIspS, from a monocotyledonous species (Arundo donax L., Poaceae). Phylogenetic reconstruction indicates that AdoIspS and dicots isoprene synthases most likely originated by parallel evolution from TPS-b monoterpene synthases...
June 16, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28637102/-the-progression-of-liver-fibrosis-in-non-alcoholic-fatty-liver-disease
#2
REVIEW
Moon Young Kim
Understanding the pathogenesis of non-alcoholic steatohepatitis (NASH) and its fibrosis progression is still evolving. Nonetheless, current evidence suggests that mechanisms involved are very complex parallel processes with multiple metabolic factors. Lipotoxicity related with excess saturated free fatty acids, obesity, and insulin resistance acts as the central driver of cellular injury via oxidative stress. Hepatocyte apoptosis and/or senescence are also contribute to the activation of inflammasome via various intra- and inter-cellular signaling mechanisms that lead to fibrosis...
June 25, 2017: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/28636818/critical-temperature-of-1-palmitoyl-2-oleoyl-sn-glycero-3-phosphoethanolamine-monolayers-and-its-possible-biological-relevance
#3
Jordi Hernandez Borrell, Oscar Domenech
Since transmembrane proteins (TMPs) can be obtained with sufficient purity for x-ray diffraction studies more frequently than decades ago, their mechanisms of action may now be elucidated. One of the pending issues is the actual interplay between transmembrane proteins and membrane lipids. There is strong evidence of the involvement of specific lipids with some membrane proteins, such as the potassium crystallographically sited activation channel (KcsA) of Streptomyces lividans and the secondary transporter of lactose LacY of Escherichia coli, the activities of which are associated with the presence of anionic phospholipids such as the phosphatidylglycerol (PG) and phosphatidyethanolamine (PE), respectively...
June 21, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28636776/facile-synthesis-and-chain-length-dependent-optical-and-structural-properties-of-diketopyrrolopyrrole-based-oligomers
#4
Satish Patil, Tushita Mukhopadhyay, Boregowda Puttaraju, Palas Roy, Jyotishman Dasgupta, Andreas Meyer
Here we report the synthesis, optical properties and solid-state packing of monodisperse oligomers of DPP up to five repeating units. Optical properties of DPP-oligomers in solution and solid state were investigated by a combination of steady-state, and transient spectroscopy. Transient absorption spectroscopy and time-correlated single photon counting (TCSPC) measurements show that the fluorescence lifetime decreases with increase in the oligomer size from monomer to trimer, thereby reaching saturation for pentameric DPP oligomer...
June 21, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28636137/the-experience-of-waiting-for-a-kidney-transplant-a-qualitative-study
#5
Tania Burns, Ritin Fernandez, Moira Stephens
BACKGROUND: In Australia over 1100 people are living on dialysis while waiting for a kidney transplant from a deceased donor. Worldwide there are an estimated 170,000 people who wait an average of three years before an organ becomes available. OBJECTIVE: To provide an understanding of the lived experience of people waiting on dialysis for a kidney transplant from a deceased donor. APPROACH: A qualitative descriptive research design was used...
June 21, 2017: Journal of Renal Care
https://www.readbyqxmd.com/read/28635680/saturated-fatty-acids-and-cardiovascular-disease-replacements-for-saturated-fat-to-reduce-cardiovascular-risk
#6
REVIEW
Michelle A Briggs, Kristina S Petersen, Penny M Kris-Etherton
Dietary recommendations to decrease the risk of cardiovascular disease (CVD) have focused on reducing intake of saturated fatty acids (SFA) for more than 50 years. While the 2015-2020 Dietary Guidelines for Americans advise substituting both monounsaturated and polyunsaturated fatty acids for SFA, evidence supports other nutrient substitutions that will also reduce CVD risk. For example, replacing SFA with whole grains, but not refined carbohydrates, reduces CVD risk. Replacing SFA with protein, especially plant protein, may also reduce CVD risk...
June 21, 2017: Healthcare (Basel, Switzerland)
https://www.readbyqxmd.com/read/28635274/oxidation-state-dependent-binding-properties-of-the-active-site-in-a-mo-containing-formate-dehydrogenase
#7
William E Robinson, Arnau Bassegoda, Erwin Reisner, Judy Hirst
Molybdenum-containing formate dehydrogenase H from Escherichia coli (EcFDH-H) is a powerful model system for studies of the reversible reduction of CO2 to formate. However, the mechanism of FDH catalysis is currently debated, and whether the primary Mo coordination sphere remains saturated or one of the ligands dissociates to allow direct substrate binding during turnover is disputed. Here, we describe how oxidation state-dependent changes at the active site alter its inhibitor binding properties. Using protein film electrochemistry we show that formate oxidation by EcFDH-H is inhibited strongly and competitively by N3-, OCN-, SCN-, NO2- and NO3-, whereas CO2 reduction is inhibited only weakly and not competitively...
June 21, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28635208/association-of-clinical-characteristics-of-patients-presenting-with-influenza-like-illness-or-severe-acute-respiratory-illness-with-development-of-acute-respiratory-distress-syndrome
#8
Muhammad Ijaz, Muhammad Jaffar Khan, Jawad Khan, Usama Usama
Clinical judgement and suspicion of influenza based on signs and symptoms of influenza-like illness and severe acute respiratory illness are critical for better patient outcome. Whether clinical characteristics of patients are associated with the development of acute respiratory distress syndrome and PCR positivity of samples was the aim of this study. We included all patients (n=37) presenting with influenza like illness (ILI) or severe acute respiratory illness (SARI) to a tertiary care hospital in northwest Pakistan during December 2015 until the end of January 2016...
May 18, 2017: Monaldi Archives for Chest Disease, Archivio Monaldi Per le Malattie del Torace
https://www.readbyqxmd.com/read/28635163/early-pregnancy-body-mass-index-modifies-the-association-of-pre-pregnancy-dietary-patterns-with-serum-polyunsaturated-fatty-acid-concentrations-throughout-pregnancy-in-brazilian-women
#9
Camila Benaim, Ana Amélia Freitas-Vilela, Thatiana de Jesus Pereira Pinto, Jaqueline Lepsch, Dayana Rodrigues Farias, Juliana Dos Santos Vaz, Tatiana El-Bacha, Gilberto Kac
Dietary patterns (DPs) have been described as an important factor that may influence polyunsaturated fatty acid (PUFA) concentrations and body mass index (BMI) during pregnancy. We aim to evaluate the association between pre-pregnancy DPs and serum PUFA percentages throughout pregnancy considering early pregnancy BMI as a possible effect modifier. A prospective cohort of 154 pregnant women was followed (5th-13th, 20th-26th, and 30th-36th gestational weeks). Serum PUFA concentrations (total n-3 and total n-6, eicosapentaenoic + docosahexaenoic acids) were measured in each trimester and expressed as percentages...
June 21, 2017: Maternal & Child Nutrition
https://www.readbyqxmd.com/read/28634761/unveiling-the-compositional-variety-of-cardiolipins-in-rhodobacter-sphaeroides-by-liquid-chromatography-with-electrospray-ionization-and-multistage-collision-induced-dissociation-mass-spectrometry
#10
Sara Granafei, Ilario Losito, Massimo Trotta, Angela Agostiano, Francesco Palmisano, Tommaso R I Cataldi
Cardiolipins (CL) contained in the lipid extracts of the photosynthetic bacterium Rhodobacter sphaeroides (strain R26) were systematically characterized by reversed-phase liquid chromatography coupled to electrospray ionization mass spectrometry, performed in single (MS), tandem (MS/MS) and sequential (MS(3)) modes using a linear ion trap mass spectrometer. The total number of carbon atoms and C=C bonds of each CL and, subsequently, those related to each of the constituting phosphatidic acid (PA) units, along with the location of the latter on the central glycerol backbone, were inferred from MS and MS/MS data, respectively...
June 20, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28634728/aroma-oil-therapy-in-palliative-care-a-pilot-study-with-physiological-parameters-in-conscious-as-well-as-unconscious-patients
#11
Melanie Goepfert, Patrick Liebl, Natalie Herth, Giancarlo Ciarlo, Jens Buentzel, Jutta Huebner
OBJECTIVE: The aim of this pilot study is to analyze the reactions of healthy test persons and conscious as well as unconscious palliative patients to aroma stimuli. PATIENTS AND METHODS: In a randomized controlled study, healthy probands, conscious and unconscious palliative patients were exposed to two essential oils (lemon, lavender). Water was used as the control stimulus. Physiological parameters (breathing rate and heart rate, oxygen saturation, systolic, diastolic and mean arterial pressure) were measured...
June 20, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28634248/suburban-families-experience-with-food-insecurity-screening-in-primary-care-practices
#12
Deepak Palakshappa, Stephanie Doupnik, Aditi Vasan, Saba Khan, Leah Seifu, Chris Feudtner, Alexander G Fiks
BACKGROUND: Food insecurity (FI) remains a major public health problem. With the rise in suburban poverty, a greater understanding of parents' experiences of FI in suburban settings is needed to effectively screen and address FI in suburban practices. METHODS: We conducted 23 semistructured interviews with parents of children <4 years of age who presented for well-child care in 6 suburban pediatric practices and screened positive for FI. In the interviews, we elicited parents' perceptions of screening for FI, how FI impacted the family, and recommendations for how practices could more effectively address FI...
June 20, 2017: Pediatrics
https://www.readbyqxmd.com/read/28634025/impaired-cerebral-autoregulation-in-preoperative-newborn-infants-with-congenital-heart-disease
#13
Jodie K Votava-Smith, Christopher J Statile, Michael D Taylor, Eileen C King, Jesse M Pratt, David P Nelson, Erik C Michelfelder
OBJECTIVES: To characterize cerebral autoregulation (CA) in preoperative newborn infants with congenital heart disease (CHD). METHODS: This was a prospective, pilot study of term newborns with CHD who required intensive care. Continuous mean arterial blood pressure (MAP), cerebral tissue oxygen saturation (SCTO2) via near-infrared spectroscopy, and arterial oxygen saturation (SaO2) were collected. Significant low-frequency coherence between MAP and SCTO2 was used to define impaired CA in 20-minute epochs...
May 23, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28633872/frozen-yogurt-and-ice-cream-were-less-healthy-than-yogurt-and-adding-toppings-reduced-their-nutrition-value-evidence-from-1999-2014-national-health-and-nutrition-examination-survey
#14
Ruopeng An, Ning Jiang
It was hypothesized that frozen yogurt and ice cream would be less healthy than yogurt. We examined daily energy and nutrient intake from yogurt, frozen yogurt, and ice cream among US adults. In-person 24-hour dietary recall data (n=6453) came from the 1999-2014 National Health and Nutrition Examination Survey. Regression analyses were performed to examine the differences in energy/nutrient intake from frozen yogurt and ice cream (with/without toppings) in comparison to yogurt. Approximately 5.3%, 0.9%, and 14...
June 2017: Nutrition Research
https://www.readbyqxmd.com/read/28633830/accompanying-the-frequency-shift-of-the-nonlinear-resonance-of-a-gas-bubble-using-a-dual-frequency-excitation
#15
Matthieu Guédra, Claude Inserra, Bruno Gilles
An asymptotic method is applied to analyze the nonlinear oscillations of a gas bubble driven by a dual-frequency excitation. More specifically, the latter is considered as a combination of two neighboring, incommensurate frequencies and is treated as a nonstationary excitation. This implies that both amplitude and phase of the bubble response are slowly oscillating at the time scale of the frequency difference, thus leading to a regime of aperiodic oscillations. The approximate solution is successfully compared with numerical simulations and reveals the possibility of achieving larger bubble response amplitude compared to the monofrequency excitation for sufficiently high driving pressure and specific values of the frequency difference...
September 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28633728/bilateral-large-pneumothoraxes-following-implantable-cardioverter-defibrillator-generator-change-a-case-report-of-an-uncommon-event-complicating-a-common-procedure
#16
Ritin Bomb, Sunil K Jha
INTRODUCTION: A bilateral large spontaneous pneumothorax to our knowledge has never been reported after a device implantation. We report an unusual case of a patient developing spontaneous bilateral large pneumothoraxes after an implantable cardioverter-defibrillator generator and lead revision without evidence of any obvious traumatic cardiac injury. CASE PRESENTATION: A 79-year-old white man was scheduled for implantable cardioverter-defibrillator generator change and addition of an atrial lead...
2017: Permanente Journal
https://www.readbyqxmd.com/read/28633724/change-in-end-expiratory-lung-volume-during-sleep-in-patients-at-risk-for-obstructive-sleep-apnea
#17
Patrick Koo, Eric J Gartman, Jigme M Sethi, Eyad Kawar, F Dennis McCool
STUDY OBJECTIVES: As lung volume decreases radial traction on the upper airway is reduced, making it more collapsible. The purpose of this study was to measure change in end-expiratory lung volume (EELV) following sleep onset and to evaluate the relationship between change in EELV and sleep-disordered breathing. METHODS: Twenty subjects underwent overnight polysomnography, of whom 14 (70%) had obstructive sleep apnea (OSA). Change in EELV was measured throughout the night using magnetometry...
June 16, 2017: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/28633721/allergic-and-non-allergic-rhinitis-are-common-in-obstructive-sleep-apnea-but-not-associated-with-disease-severity
#18
Ming Zheng, Xiangdong Wang, Siqi Ge, Ying Gu, Xiu Ding, Yuhuan Zhang, Jingying Ye, Luo Zhang
STUDY OBJECTIVES: Several studies have suggested that rhinitis contributes to the pathogenesis of obstructive sleep apnea (OSA). We aimed to investigate the prevalence and influence of allergic rhinitis (AR) and non-allergic rhinitis (NAR) on severity of OSA. METHODS: Two hundred forty patients with OSA confirmed by standardized polysomnography were assessed for presence of AR and NAR, using validated questionnaires and skin prick tests. Data comparison was carried out by using chi-square test, analysis of variance, and least significant difference test...
June 16, 2017: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/28633598/metabolism-of-inhaled-methylethylketone-in-rats
#19
Frédéric Cosnier, Stéphane Grossmann, Hervé Nunge, Céline Brochard, Samuel Muller, Anne-Marie Lambert-Xolin, Sylvie Sebillaud, Benoît Rieger, Aurélie Thomas, Marie-Josèphe Décret, Manuella Burgart, Laurent Gaté, Benoît Cossec, Pierre Campo
Methylethylketone (MEK) is widely used in industry, often in combination with other compounds. Although nontoxic, it can make other chemicals harmful. This study investigates the fate of MEK in rat blood, brain and urine as well as its hepatic metabolism following inhalation over 1 month (at 20, 200 or 1400 ppm). MEK did not significantly accumulate in the organism: blood concentrations were similar after six-hour or 1-month inhalation periods, and brain concentrations only increased slightly after 1 month's exposure...
February 28, 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/28633542/deciphering-participation-an-interpretive-synthesis-of-its-meaning-and-application-in-rehabilitation
#20
Alison M Cogan, Mike Carlson
PURPOSE: Participation is widely recognized as an important outcome for rehabilitation. However, it lacks a universally accepted definition. The purpose of this review is to synthesize the literature about participation in rehabilitation in order to clarify the term and increase its usefulness for rehabilitation providers and researchers. METHODS: We undertook an interpretive synthesis of the literature, drawing from a broad and varied selection of the vast number of publications on the subject of participation...
June 21, 2017: Disability and Rehabilitation
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