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https://www.readbyqxmd.com/read/28449241/autophagy-compensates-impaired-energy-metabolism-in-clpxp-deficient-podospora-anserina-strains-and-extends-healthspan
#1
Laura Knuppertz, Heinz D Osiewacz
The degradation of nonfunctional mitochondrial proteins is of fundamental relevance for maintenance of cellular homeostasis. The heteromeric CLPXP protein complex in the mitochondrial matrix is part of this process. In the fungal aging model Podospora anserina, ablation of CLPXP leads to an increase in healthy lifespan. Here, we report that this counterintuitive increase depends on a functional autophagy machinery. In PaClpXP mutants, autophagy is involved in energy conservation and the compensation of impairments in respiration...
April 27, 2017: Aging Cell
https://www.readbyqxmd.com/read/28449223/the-impact-of-a-sibling-s-life-limiting-genetic-condition-on-adult-brothers-and-sisters
#2
Erica Brown, Jane Coad, Anita Franklin
It is estimated that rare diseases affect the lives of over three million people in the United Kingdom. Of these, a significant proportion are children and young people with genetic life-limiting or life-shortening conditions. This study used a qualitative approach with in-depth semi-structured interviews to explore the experiences of 10 adult siblings of a baby diagnosed with Trisomy 13 (Patau syndrome) or Trisomy 18 (Edward syndrome). Findings illustrate that parental grief from the time of their child's diagnosis onward is also experienced by siblings...
April 27, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28449220/survival-functional-status-and-eating-ability-after-percutaneous-endoscopic-gastrostomy-tube-placement-for-acute-stroke
#3
Karl Meisel, Robert M Arnold, Irena Stijacic Cenzer, John Boscardin, Alexander K Smith
OBJECTIVES: To determine the long-term survival and independence of individuals with stroke and percutaneous endoscopic gastrostomy (PEG) tube placement. DESIGN: Retrospective cohort study. SETTING: A longitudinal nationally representative community-based sample of older adults. PARTICIPANTS: Individuals with stroke who had a PEG tube placed (N = 174, mean age 79, 51% female, 29% African American). MEASUREMENTS: Functional status before incident stroke was determined based on data from the Health and Retirement Study (HRS), a national longitudinal survey of community-dwelling older adults, from 1993 to 2012...
April 27, 2017: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/28449211/operational-tolerance-in-kidney-transplantation-and-associated-biomarkers
#4
REVIEW
Annick Massart, Lidia Ghisdal, Marc Abramowicz, Daniel Abramowicz
In the 1960s, our predecessors won a historical battle against acute rejection and ensured that transplantation became a common life-saving treatment. In parallel to this success, or perhaps because of it, we lost the battle for long-lived transplants, being overwhelmed with chronic immune insults and the toxicities of immunosuppression. It is likely that current powerful treatments block acute rejection, but at the same time condemn the few circulating donor cells that would have been able to elicit immunoregulatory host responses towards the allograft...
April 27, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28449121/tri-directional-anaphases-as-a-novel-chromosome-segregation-defect-in-human-oocytes
#5
Jenna Haverfield, Nicola L Dean, Diana Nöel, Gaudeline Rémillard-Labrosse, Veronique Paradis, Isaac-Jacques Kadoch, Greg FitzHarris
STUDY QUESTION: What are the chromosome segregation errors in human oocyte meiosis-I that may underlie oocyte aneuploidy? SUMMARY ANSWER: Multiple modes of chromosome segregation error were observed, including tri-directional anaphases, which we attribute to loss of bipolar spindle structure at anaphase-I. WHAT IS KNOWN ALREADY: Oocyte aneuploidy is common and associated with infertility, but mechanistic information on the chromosome segregation errors underlying these defects is scarce...
April 25, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28448628/determinants-of-formal-care-use-and-expenses-among-in-home-elderly-in-jing-an-district-shanghai-china
#6
Fen Li, Xinye Fang, Jiechun Gao, Hansheng Ding, Changying Wang, Chunyan Xie, Yitong Yang, Chunlin Jin
The need for formal care among the elderly population has been increasing due to their greater longevity and the evolution of family structure. We examined the determinants of the use and expenses of formal care among in-home elderly adults in Shanghai. A two-part model based on the data from the Shanghai Long-Term Care Needs Assessment Questionnaire was applied. A total of 8428 participants responded in 2014 and 7100 were followed up in 2015. The determinants of the probability of using formal care were analyzed in the first part of the model and the determinants of formal care expenses were analyzed in the second part...
2017: PloS One
https://www.readbyqxmd.com/read/28448619/pyridoxal-phosphate-synthases-pdxs-pdxt-are-required-for-actinobacillus-pleuropneumoniae-viability-stress-tolerance-and-virulence
#7
Fang Xie, Gang Li, Yalei Wang, Yanhe Zhang, Long Zhou, Chengcheng Wang, Shuanghong Liu, Siguo Liu, Chunlai Wang
Pyridoxal 5'-phosphate (PLP) is an essential cofactor for numerous enzymes involved in a diversity of cellular processes in living organisms. Previous analysis of the Actinobacillus pleuropneumoniae S-8 genome sequence revealed the presence of pdxS and pdxT genes, which are implicated in deoxyxylulose 5-phosphate (DXP)-independent pathway of PLP biosynthesis; however, little is known about their roles in A. pleuropneumoniae pathogenicity. Our data demonstrated that A. pleuropneumoniae could synthesize PLP by PdxS and PdxT enzymes...
2017: PloS One
https://www.readbyqxmd.com/read/28448509/better-than-counting-seconds-identifying-fallers-among-healthy-elderly-using-fusion-of-accelerometer-features-and-dual-task-timed-up-and-go
#8
Moacir Ponti, Patricia Bet, Caroline L Oliveira, Paula C Castro
Devices and sensors for identification of fallers can be used to implement actions to prevent falls and to allow the elderly to live an independent life while reducing the long-term care costs. In this study we aimed to investigate the accuracy of Timed Up and Go test, for fallers' identification, using fusion of features extracted from accelerometer data. Single and dual tasks TUG (manual and cognitive) were performed by a final sample (94% power) of 36 community dwelling healthy older persons (18 fallers paired with 18 non-fallers) while they wear a single triaxial accelerometer at waist with sampling rate of 200Hz...
2017: PloS One
https://www.readbyqxmd.com/read/28448483/trends-in-repeat-births-and-use-of-postpartum-contraception-among-teens-united-states-2004-2015
#9
Deborah L Dee, Karen Pazol, Shanna Cox, Ruben A Smith, Katherine Bower, Martha Kapaya, Amy Fasula, Ayanna Harrison, Charlan D Kroelinger, Denise D'Angelo, Leslie Harrison, Emilia H Koumans, Nikki Mayes, Wanda D Barfield, Lee Warner
Teen* childbearing (one or more live births before age 20 years) can have negative health, social, and economic consequences for mothers and their children (1). Repeat teen births (two or more live births before age 20 years) can constrain the mother's ability to take advantage of educational and workforce opportunities (2), and are more likely to be preterm or of low birthweight than first teen births (3). Despite the historic decline in the U.S. teen birth rate during 1991-2015, from 61.8 to 22.3 births per 1,000 females aged 15-19 years (4), many teens continue to have repeat births (3)...
April 28, 2017: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/28448172/the-macrophage-stimulating-anti-cancer-agent-rrx-001-protects-against-ischemia-reperfusion-injury
#10
Pedro Cabrales, Scott Caroen, Arnold Oronsky, Corey Carter, Jane Trepel, Thomas Summers, Tony Reid, Neil Oronsky, Michelle Lybeck, Bryan Oronsky
Introduction RRx-001, a clinical macrophage-stimulating anti-cancer agent that also produces nitric oxide (NO) was studied in a model of ischemia-reperfusion injury. Methods The production of NO is dependent on the oxygen tension because nitric oxide synthases convert l-arginine to NO and l-citrulline in the presence of O2. Since the P450 enzymes, which metabolize nitrate esters such as nitroglycerin are dependent on oxygen, the generation of 'exogenous' NO is also sensitive to alterations in tissue PO2. I/R injury was studied in a hamster chamber window, with compression of the periphery of the window for 1 hour to induce ischemia...
April 27, 2017: Expert Review of Hematology
https://www.readbyqxmd.com/read/28448004/live-confocal-imaging-of-developing-arabidopsis-flowers
#11
Nathanaël Prunet
The study of plant growth and development has long relied on experimental techniques using dead, fixed tissues and lacking proper cellular resolution. Recent advances in confocal microscopy, combined with the development of numerous fluorophores, have overcome these issues and opened the possibility to study the expression of several genes simultaneously, with a good cellular resolution, in live samples. Live confocal imaging provides plant biologists with a powerful tool to study development, and has been extensively used to study root growth and the formation of lateral organs on the flanks of the shoot apical meristem...
April 1, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28447628/the-association-between-inflammation-obesity-and-elevated-blood-pressure-in-16-25-year-old-females
#12
A K Subasinghe, J D Wark, A Gorelik, E T Callegari, S M Garland
There is evidence to show an association between inflammation, obesity and elevated blood pressure. However, there is limited data for this relationship in adolescent females. We aimed to investigate the association between high sensitivity C-reactive protein (hs-CRP) and elevated blood pressure in young Australian females. Women aged 16-25 years living in Victoria were randomly recruited via targeted Facebook advertising. Socio-demographic information was collected via a web-based questionnaire. Anthropometric and blood pressure measurements were conducted by trained staff...
April 27, 2017: Journal of Human Hypertension
https://www.readbyqxmd.com/read/28447505/does-pituitary-suppression-affect-live-birth-rate-in-women-with-congenital-hypogonadotrophic-hypogonadism-undergoing-intra-cytoplasmic-sperm-injection-a-multicenter-cohort-study
#13
Sezcan Mumusoglu, Baris Ata, Volkan Turan, Berfu Demir, Inci Kahyaoglu, Kiper Aslan, Ayse Seyhan Ata, Bulent Yilmaz, Kayhan Yakin, Berrin Avci, Gurkan Uncu, Gurkan Bozdag
In this retrospective multicenter cohort study, women with congenital hypogonadotrophic hypogonadism (CHH) (n = 57) who underwent intra-cytoplasmic sperm injection in-between 2010-2014 were compared to age-matched controls with tubal factor infertility (n = 114) to assess ovarian stimulation cycle and pregnancy outcomes. Live birth rates (LBRs) per started cycle were 31.6 and 24.6% in CHH and controls groups, respectively (p = 0.36). Comparable success rates were also confirmed with the logistic regression analysis (OR: 1...
April 27, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28447398/a-suite-of-essential-biodiversity-variables-for-detecting-critical-biodiversity-change
#14
Dirk S Schmeller, Lauren V Weatherdon, Adeline Loyau, Alberte Bondeau, Lluis Brotons, Neil Brummitt, Ilse R Geijzendorffer, Peter Haase, Mathias Kuemmerlen, Corinne S Martin, Jean-Baptiste Mihoub, Duccio Rocchini, Hannu Saarenmaa, Stefan Stoll, Eugenie C Regan
Key global indicators of biodiversity decline, such as the IUCN Red List Index and the Living Planet Index, have relatively long assessment intervals. This means they, due to their inherent structure, function as late-warning indicators that are retrospective, rather than prospective. These indicators are unquestionably important in providing information for biodiversity conservation, but the detection of early-warning signs of critical biodiversity change is also needed so that proactive management responses can be enacted promptly where required...
April 26, 2017: Biological Reviews of the Cambridge Philosophical Society
https://www.readbyqxmd.com/read/28446209/antipsychotic-prescribing-for-alzheimer-s-disease-and-related-disorders-in-specialized-settings-from-2010-to-2014-in-france-a-repeated-cross-sectional-study
#15
Karim Tifratene, Valeria Manera, Roxane Fabre, Auriane Gros, Susanne Thummler, Christian Pradier, Philippe Robert, Renaud David
BACKGROUND: Safety warnings from health authorities are currently intended to limit the use of antipsychotics (APs) in dementia-related conditions to treat neuropsychiatric symptoms, such as disturbing and/or delusional behaviors. The aim of this study is to investigate prevalence, correlates and trends of AP prescribing among people with dementia between 2010 and 2014 in the French population. METHODS: AP prescribing and associated factors among individuals with AD, mixed dementia and vascular dementia in the French National Alzheimer Database between 2010 and 2014 were analyzed using multivariate generalized estimating equations models (n = 199,549)...
April 26, 2017: Alzheimer's Research & Therapy
https://www.readbyqxmd.com/read/28445749/equilibrium-ensembles-for-insulin-folding-from-bias-exchange-metadynamics
#16
Richa Singh, Rohit Bansal, Anurag Singh Rathore, Gaurav Goel
Earliest events in the aggregation process, such as single molecule reconfiguration, are extremely important and the most difficult to characterize in experiments. To this end, we have used well-tempered bias exchange metadynamics simulations to determine the equilibrium ensembles of an insulin molecule under amyloidogenic conditions of low pH and high temperature. A bin-based clustering method that uses statistics accumulated in bias exchange metadynamics trajectories was employed to construct a detailed thermodynamic and kinetic model of insulin folding...
April 25, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28445711/the-short-term-behavioural-response-of-sows-but-not-gilts-to-a-social-stimulus-is-related-to-sow-aggressiveness-in-groups
#17
M Verdon, R S Morrison, M Rice, K L Butler, P H Hemsworth
This study examined relationships between the behavioural response of pregnant gilts (n=200, gestation 1) and sows (n=200, gestation 2) to a live, similarly-aged female pig (unfamiliar pig test, UPT) and to a fibre-glass model pig (model pig test, MPT), and aggressive behaviour on the day after mixing (day 2). Sows with a short latency to make contact with an unfamiliar sow in the UPT were more likely to deliver high levels of aggression at day 2 of gestation 2 (P=0.005), but this relationship was stronger when a model pig was used (P <0...
April 23, 2017: Behavioural Processes
https://www.readbyqxmd.com/read/28445637/control-of-charge-carriers-trapping-and-relaxation-in-hematite-by-oxygen-vacancy-charge-ab-initio-non-adiabatic-molecular-dynamics
#18
Zhaohui Zhou, Jin Liu, Run Long, Linqiu Li, Liejin Guo, Oleg V Prezhdo
Ultrafast charge recombination in hematite (α-Fe2O3) severely limits its applications in solar energy conversion and utilization, for instance, in photo-electrochemical water splitting. We report the first time-domain ab initio study of charge relaxation dynamics in α-Fe2O3 with and without the oxygen vacancy (Ov) defect, using non-adiabatic molecular dynamics implemented within time-dependent density functional theory. The simulations show that the hole trapping is the rate-limiting step in the electron-hole recombination process for both neutral and ionized Ov systems...
April 26, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28445473/how-to-plan-reintroductions-of-long-lived-birds
#19
Virginia Morandini, Miguel Ferrer
Reintroductions have been increasingly used for species restoration and it seems that this conservation tool is going to be more used in the future. Nevertheless, there is not a clear consensus about the better procedure for that, consequently a better knowledge of how to optimize this kind of management is needed. Here we examined the dynamics of released long-lived bird populations (lesser kestrel, Falco naumanni, Bonelli's eagle Aquila fasciata, and bearded vulture Gypaetus barbatus) in object-oriented simulated reintroduction programs...
2017: PloS One
https://www.readbyqxmd.com/read/28444937/soluble-inorganic-nanoparticle-constructed-porous-coordination-frameworks-as-homogenized-heterogeneous-photocatalysts-for-suzuki-coupling-reaction-under-near-infrared-light
#20
Baodui Wang, Yuting Luo, Yong Peng, Weisheng Liu, Fengjuan Chen
Self-assembly has emerged as a promising method to control the structure and properties of ensembles of inorganic nanoparticles (NPs) for exploiting their collective effects. However, the rational assembly of inorganic NPs into soluble porous architectures as homogenized heterogeneous catalyst has been less studied. Here, we show that inorganic NPs can be used for the assembly of soluble porous coordination frameworks (PCFs) by atom-scale interfacial coordination-driven assembly strategy. Given large pore size, high dispersity in solution, strong absorption in the near-infrared range (NIR), and a long living electron-hole pair, the obtained soluble framework can serve as a platform for homogenize heterogeneous photocatalysts, which exhibited excellent activity, high apparent quantum efficiency, and recyclability to catalyze the noble metal free Suzuki coupling reaction under NIR light at room temperature...
April 26, 2017: Chemistry: a European Journal
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