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https://www.readbyqxmd.com/read/29133445/conceptualizing-the-origin-of-life-in-terms-of-evolution
#1
REVIEW
N Takeuchi, P Hogeweg, K Kaneko
In this opinion piece, we discuss how to place evolution in the context of origin-of-life research. Our discussion starts with a popular definition: 'life is a self-sustained chemical system capable of undergoing Darwinian evolution'. According to this definition, the origin of life is the same as the origin of evolution: evolution is the 'end' of the origin of life. This perspective, however, has a limitation, in that the ability of evolution in and of itself is insufficient to explain the origin of life as we know it, as indicated by Spiegelman's and Lincoln and Joyce's experiments...
December 28, 2017: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/29122988/king-is-a-plant-specific-kinesin-that-regulates-both-intra-and-intercellular-movement-of-short-root
#2
Ziv Spiegelman, Chin-Mei Lee, Kimberly L Gallagher
Both endogenous plant proteins and viral movement proteins associate with microtubules to promote their movement through plasmodesmata. The association of viral movement proteins with microtubules facilitates the formation of virus-associated replication complexes, which are required for the amplification and subsequent spread of the virus. However, the role of microtubules in the intercellular movement of plant proteins is less clear. Here we show that the SHORT-ROOT (SHR) protein, which moves between cells in the root to regulate root radial patterning, interacts with a type-14 kinesin, KINESIN G (KinG)...
November 9, 2017: Plant Physiology
https://www.readbyqxmd.com/read/29100083/high-rate-of-recurrent-de-novo-mutations-in-developmental-and-epileptic-encephalopathies
#3
Fadi F Hamdan, Candace T Myers, Patrick Cossette, Philippe Lemay, Dan Spiegelman, Alexandre Dionne Laporte, Christina Nassif, Ousmane Diallo, Jean Monlong, Maxime Cadieux-Dion, Sylvia Dobrzeniecka, Caroline Meloche, Kyle Retterer, Megan T Cho, Jill A Rosenfeld, Weimin Bi, Christine Massicotte, Marguerite Miguet, Ledia Brunga, Brigid M Regan, Kelly Mo, Cory Tam, Amy Schneider, Georgie Hollingsworth, David R FitzPatrick, Alan Donaldson, Natalie Canham, Edward Blair, Bronwyn Kerr, Andrew E Fry, Rhys H Thomas, Joss Shelagh, Jane A Hurst, Helen Brittain, Moira Blyth, Robert Roger Lebel, Erica H Gerkes, Laura Davis-Keppen, Quinn Stein, Wendy K Chung, Sara J Dorison, Paul J Benke, Emily Fassi, Nicole Corsten-Janssen, Erik-Jan Kamsteeg, Frederic T Mau-Them, Ange-Line Bruel, Alain Verloes, Katrin Õunap, Monica H Wojcik, Dara V F Albert, Sunita Venkateswaran, Tyson Ware, Dean Jones, Yu-Chi Liu, Shekeeb S Mohammad, Peyman Bizargity, Carlos A Bacino, Vincenzo Leuzzi, Simone Martinelli, Bruno Dallapiccola, Marco Tartaglia, Lubov Blumkin, Klaas J Wierenga, Gabriela Purcarin, James J O'Byrne, Sylvia Stockler, Anna Lehman, Boris Keren, Marie-Christine Nougues, Cyril Mignot, Stéphane Auvin, Caroline Nava, Susan M Hiatt, Martina Bebin, Yunru Shao, Fernando Scaglia, Seema R Lalani, Richard E Frye, Imad T Jarjour, Stéphanie Jacques, Renee-Myriam Boucher, Emilie Riou, Myriam Srour, Lionel Carmant, Anne Lortie, Philippe Major, Paola Diadori, François Dubeau, Guy D'Anjou, Guillaume Bourque, Samuel F Berkovic, Lynette G Sadleir, Philippe M Campeau, Zoha Kibar, Ronald G Lafrenière, Simon L Girard, Saadet Mercimek-Mahmutoglu, Cyrus Boelman, Guy A Rouleau, Ingrid E Scheffer, Heather C Mefford, Danielle M Andrade, Elsa Rossignol, Berge A Minassian, Jacques L Michaud
Developmental and epileptic encephalopathy (DEE) is a group of conditions characterized by the co-occurrence of epilepsy and intellectual disability (ID), typically with developmental plateauing or regression associated with frequent epileptiform activity. The cause of DEE remains unknown in the majority of cases. We performed whole-genome sequencing (WGS) in 197 individuals with unexplained DEE and pharmaco-resistant seizures and in their unaffected parents. We focused our attention on de novo mutations (DNMs) and identified candidate genes containing such variants...
November 2, 2017: American Journal of Human Genetics
https://www.readbyqxmd.com/read/29071721/erythrocyte-membrane-fatty-acids-and-breast-cancer-risk-a-prospective-analysis-in-the-nurses-health-study-ii
#4
Kelly A Hirko, Boyang Chai, Donna Spiegelman, Hannia Campos, Maryam S Farvid, Susan E Hankinson, Walter C Willett, A Heather Eliassen
The roles of specific fatty acids in breast cancer etiology are unclear, particularly among premenopausal women. We examined 34 individual fatty acids, measured in blood erythrocytes collected between 1996-1999, and breast cancer risk in a nested case-control study of primarily premenopausal women in the Nurses' Health Study II. Breast cancer cases diagnosed after blood collection and before June 2010 (n=794) were matched to controls and conditional logistic regression was used to estimate OR's (95% CI's) for associations of fatty acids with breast cancer; unconditional logistic regression was used for stratified analyses...
October 26, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29036411/relative-validity-of-nutrient-intakes-assessed-by-questionnaire-24-hour-recalls-and-diet-records-compared-with-urinary-recovery-and-plasma-concentration-biomarkers-findings-for-women
#5
Changzheng Yuan, Donna Spiegelman, Eric B Rimm, Bernard A Rosner, Meir J Stampfer, Junaidah B Barnett, Jorge E Chavarro, Jennifer C Rood, Lisa J Harnack, Laura K Sampson, Walter C Willett
The authors evaluated the performance of a semi-quantitative food frequency questionnaire (SFFQ), web-based 24-hour recalls (ASA24s), and 7-day dietary records (7DDRs) compared to biomarkers among 627 women in Women's Lifestyle Validation Study (US, 2010-2012). Two paper SFFQs, one web-based SFFQ, four ASA24s (beta version), two 7DDRs, four 24-hour urine samples, one doubly-labeled water (repeated among 76 participants), and two fasting blood samples were collected over a 15-months-period. Dietary variables evaluated were energy, energy-adjusted intakes of protein, sodium, potassium, and specific fatty acids, carotenoids, α-tocopherol, retinol and folate...
October 4, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/29034148/does-a-grill-menu-redesign-influence-sales-nutrients-purchased-and-consumer-acceptance-in-a-worksite-cafeteria
#6
Maya K Vadiveloo, Vasanti S Malik, Donna Spiegelman, Walter C Willett, Josiemer Mattei
Worksite cafeterias are compelling venues to improve diet quality through environmental changes. We conducted a pre-post study to evaluate how a cafeteria-initiated grill menu redesign influenced sales, revenue, and nutrient content of foods purchased. Secondly, we evaluated consumer opinions about menu changes to inform practices for worksite environment interventions. Monthly sales data (2012-2015) were used to compute gross sales and revenue of entrées and side dishes pre-post menu changes. Alternative protein sources replaced red meat; nutrient composition and nutrients purchased were compared using Food Pro software...
December 2017: Preventive Medicine Reports
https://www.readbyqxmd.com/read/29024998/response-to-serious-danger-signals-response-to-the-effect-of-neonatal-vitamin-a-supplementation-on-morbidity-and-mortality-at-12-months-a-randomized-trial
#7
Emily R Smith, Alfa Muhihi, Salum Mshamu, Christopher R Sudfeld, Ramadhani Abdallah Noor, Donna Spiegelman, Roger L Shapiro, Honorati Masanja, Wafaie Fawzi
No abstract text is available yet for this article.
October 1, 2017: International Journal of Epidemiology
https://www.readbyqxmd.com/read/28992341/a-prospective-study-of-inflammatory-markers-and-risk-of-endometriosis
#8
Fan Mu, Holly R Harris, Janet W Rich-Edwards, Susan E Hankinson, Eric B Rimm, Donna Spiegelman, Stacey A Missmer
A body of evidence suggests a role for inflammation in the pathogenesis of endometriosis. Numerous case-control studies have found that inflammatory markers were elevated in endometriosis cases compared to controls. However, results are not consistent and no prior prospective study exists. We conducted a case-control study study nested within the Nurses' Health Study II examining the associations between plasma levels of interleukin-1 beta (IL-1ß), IL-6, soluble tumor necrosis factor α receptor-1 (sTNFR-1), sTNFR-2, and high-sensitivity C-reactive protein and laparoscopically-confirmed endometriosis risk...
July 13, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28988768/crosstalk-between-kcnk3-mediated-ion-current-and-adrenergic-signaling-regulates-adipose-thermogenesis-and-obesity
#9
Yi Chen, Xing Zeng, Xuan Huang, Sara Serag, Clifford J Woolf, Bruce M Spiegelman
Adrenergic stimulation promotes lipid mobilization and oxidation in brown and beige adipocytes, where the harnessed energy is dissipated as heat in a process known as adaptive thermogenesis. The signaling cascades and energy-dissipating pathways that facilitate thermogenesis have been extensively described, yet little is known about the counterbalancing negative regulatory mechanisms. Here, we identify a two-pore-domain potassium channel, KCNK3, as a built-in rheostat negatively regulating thermogenesis. Kcnk3 is transcriptionally wired into the thermogenic program by PRDM16, a master regulator of thermogenesis...
November 2, 2017: Cell
https://www.readbyqxmd.com/read/28978428/genetic-depletion-of-adipocyte-creatine-metabolism-inhibits-diet-induced-thermogenesis-and-drives-obesity
#10
Lawrence Kazak, Edward T Chouchani, Gina Z Lu, Mark P Jedrychowski, Curtis J Bare, Amir I Mina, Manju Kumari, Song Zhang, Ivan Vuckovic, Dina Laznik-Bogoslavski, Petras Dzeja, Alexander S Banks, Evan D Rosen, Bruce M Spiegelman
No abstract text is available yet for this article.
October 3, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/28967025/theoretical-investigation-of-the-solid-liquid-phase-transition-in-protonated-water-clusters
#11
Kseniia Korchagina, Aude Simon, Mathias Rapacioli, Fernand Spiegelman, Jean-Marc L'Hermite, Isabelle Braud, Sébastien Zamith, Jérôme Cuny
Protonated water clusters have received a lot of attention as they offer tools to bridge the gap between molecular and bulk scales of water. However, their properties are still not fully understood and deserve further theoretical and experimental investigations. In this work, we simulate the caloric curves of protonated water clusters (H2O)nH(+) (n = 20-23). These curves, which have recently been measured experimentally, are characteristic of the phase changes occurring in the aggregates with respect to temperature...
October 18, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28930628/estimation-and-inference-for-the-mediation-proportion
#12
Daniel Nevo, Xiaomei Liao, Donna Spiegelman
In epidemiology, public health and social science, mediation analysis is often undertaken to investigate the extent to which the effect of a risk factor on an outcome of interest is mediated by other covariates. A pivotal quantity of interest in such an analysis is the mediation proportion. A common method for estimating it, termed the "difference method", compares estimates from models with and without the hypothesized mediator. However, rigorous methodology for estimation and statistical inference for this quantity has not previously been available...
September 20, 2017: International Journal of Biostatistics
https://www.readbyqxmd.com/read/28910845/the-association-between-fetal-fibronectin-cervical-length-and-amniotic-fluid-sludge-with-histological-indicators-of-placental-inflammation-in-twin-gestations
#13
Aboluwade Ayodele, Nathan S Fox, Simi Gupta, Jessica Spiegelman, Daniel H Saltzman, Whitney Booker, Andrei Rebarber
No abstract text is available yet for this article.
September 14, 2017: American Journal of Perinatology
https://www.readbyqxmd.com/read/28872273/identification-of-misdiagnosed-hiv-clients-in-an-early-access-to-art-for-all-implementation-study-in-swaziland
#14
Shaukat Khan, Emma Mafara, Munyaradzi Pasipamire, Donna Spiegelman, Sikhathele Mazibuko, Nombuso Ntshalintshali, Anita Hettema, Charlotte Lejeune, Fiona Walsh, Velephi Okello
INTRODUCTION: Rapid diagnostic testing has made HIV diagnosis and subsequent treatment more accessible. However, multiple factors, including improper implementation of testing strategies and clerical errors, have been reported to lead to HIV misdiagnosis. The World Health Organization has recommended HIV retesting prior to antiretroviral therapy (ART) initiation which has become pertinent with scaling up of Early Access to ART for All (EAAA). In this analysis, misdiagnosed clients are identified from a subgroup of clients enrolled in EAAA implementation study in Swaziland...
August 29, 2017: Journal of the International AIDS Society
https://www.readbyqxmd.com/read/28852538/forensic-bitemark-identification-weak-foundations-exaggerated-claims
#15
Michael J Saks, Thomas Albright, Thomas L Bohan, Barbara E Bierer, C Michael Bowers, Mary A Bush, Peter J Bush, Arturo Casadevall, Simon A Cole, M Bonner Denton, Shari Seidman Diamond, Rachel Dioso-Villa, Jules Epstein, David Faigman, Lisa Faigman, Stephen E Fienberg, Brandon L Garrett, Paul C Giannelli, Henry T Greely, Edward Imwinkelried, Allan Jamieson, Karen Kafadar, Jerome P Kassirer, Jonathan 'Jay' Koehler, David Korn, Jennifer Mnookin, Alan B Morrison, Erin Murphy, Nizam Peerwani, Joseph L Peterson, D Michael Risinger, George F Sensabaugh, Clifford Spiegelman, Hal Stern, William C Thompson, James L Wayman, Sandy Zabell, Ross E Zumwalt
Several forensic sciences, especially of the pattern-matching kind, are increasingly seen to lack the scientific foundation needed to justify continuing admission as trial evidence. Indeed, several have been abolished in the recent past. A likely next candidate for elimination is bitemark identification. A number of DNA exonerations have occurred in recent years for individuals convicted based on erroneous bitemark identifications. Intense scientific and legal scrutiny has resulted. An important National Academies review found little scientific support for the field...
December 2016: Journal of Law and the Biosciences
https://www.readbyqxmd.com/read/28851765/history-of-breast-feeding-and-risk-of-incident-endometriosis-prospective-cohort-study
#16
Leslie V Farland, A Heather Eliassen, Rulla M Tamimi, Donna Spiegelman, Karin B Michels, Stacey A Missmer
Objective To investigate the association between lifetime breast feeding, exclusive breast feeding, postpartum amenorrhea, and incidence of endometriosis among parous women.Design Prospective cohort study.Setting Nurses' Health Study II, 1989-2011.Participants 72 394women who reported having one or more pregnancies that lasted at least six months, 3296 of whom had laparoscopically confirmed endometriosis. For each pregnancy, women reported duration of total breast feeding, exclusive breast feeding, and postpartum amenorrhea...
August 29, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28844881/genetic-depletion-of-adipocyte-creatine-metabolism-inhibits-diet-induced-thermogenesis-and-drives-obesity
#17
Lawrence Kazak, Edward T Chouchani, Gina Z Lu, Mark P Jedrychowski, Curtis J Bare, Amir I Mina, Manju Kumari, Song Zhang, Ivan Vuckovic, Dina Laznik-Bogoslavski, Petras Dzeja, Alexander S Banks, Evan D Rosen, Bruce M Spiegelman
Diet-induced thermogenesis is an important homeostatic mechanism that limits weight gain in response to caloric excess and contributes to the relative stability of body weight in most individuals. We previously demonstrated that creatine enhances energy expenditure through stimulation of mitochondrial ATP turnover, but the physiological role and importance of creatine energetics in adipose tissue have not been explored. Here, we have inactivated the first and rate-limiting enzyme of creatine biosynthesis, glycine amidinotransferase (GATM), selectively in fat (Adipo-Gatm KO)...
October 3, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/28843294/metabo-mir-mir-211-regulates-mitochondrial-energy-metabolism-in-vitiligo
#18
REVIEW
Vladimir S Spiegelman, Irina A Elcheva
The study by Sahoo et al. established miR-211 as a critical regulator of cellular metabolism in vitiligo cells. miR-211, which is expressed from the transient receptor potential melastatin 1 intronic region, regulates oxidative phosphorylation and mitochondrial energy metabolism in vitiligo. Loss of miR-211 in melanocytes was shown to alter expression patterns of newly identified target genes, and those that regulate respiratory functions in melanocytes are among them. This study highlights the importance of miR-211 for the melanocyte biology and development of vitiligo...
September 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28842500/mitochondrial-reactive-oxygen-species-and-adipose-tissue-thermogenesis-bridging-physiology-and-mechanisms
#19
REVIEW
Edward T Chouchani, Lawrence Kazak, Bruce M Spiegelman
Brown and beige adipose tissues can catabolize stored energy to generate heat, relying on the principal effector of thermogenesis: uncoupling protein 1 (UCP1). This unique capability could be leveraged as a therapy for metabolic disease. Numerous animal and cellular models have now demonstrated that mitochondrial reactive oxygen species (ROS) signal to support adipocyte thermogenic identity and function. Herein, we contextualize these findings within the established principles of redox signaling and mechanistic studies of UCP1 function...
October 13, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28821264/impact-of-early-initiation-versus-national-standard-of-care-of-antiretroviral-therapy-in-swaziland-s-public-sector-health-system-study-protocol-for-a-stepped-wedge-randomized-trial
#20
Fiona J Walsh, Till Bärnighausen, Wim Delva, Yvette Fleming, Gavin Khumalo, Charlotte L Lejeune, Sikhathele Mazibuko, Charmaine Khudzie Mlambo, Ria Reis, Donna Spiegelman, Mandisa Zwane, Velephi Okello
BACKGROUND: There is robust clinical evidence to support offering early access to antiretroviral treatment (ART) to all HIV-positive individuals, irrespective of disease stage, to both improve patient health outcomes and reduce HIV incidence. However, as the global treatment guidelines shift to meet this evidence, it is still largely unknown if early access to ART for all (also referred to as "treatment as prevention" or "universal test and treat") is a feasible intervention in the resource-limited countries where this approach could have the biggest impact on the course of the HIV epidemics...
August 18, 2017: Trials
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