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C Caldwell

Lydia K Caldwell, William H DuPont, Matthew K Beeler, Emily M Post, Emily C Barnhart, Vincent H Hardesty, John P Anders, Emily C Borden, Jeff S Volek, William J Kraemer
The purpose of this double-blind, placebo-controlled investigation was to examine the effects of a Korean Ginseng (GINST15) on measures of perception and physical performance following an acute bout of resistance exercise. Ten women (age: 38.7 ± 7.8 years; height: 1.64 ± 0.05 m; body mass: 76.0 ± 11.6 kg) and nine men (age: 41.2. ± 9.7 years; height: 1.77 ± 0.05 m; body mass: 88.5 ± 5.0 kg) completed the investigation. Participants were randomized to a three-cycle testing scheme consisting of high dose ginseng (HIGH: 960 mg/day), low dose ginseng (LOW: 160 mg/day) and placebo (PBO: 0 mg/day)...
March 2018: Journal of Sports Science & Medicine
M R Crull, R Somayaji, K J Ramos, E Caldwell, N Mayer-Hamblett, M L Aitken, D P Nichols, A Rowhani-Rahbar, C H Goss
Rationale: Chronic Pseudomonas aeruginosa lung infection is common and associated with significant morbidity and mortality in cystic fibrosis (CF). Whether recent advances in care have affected the rates of chronic infection is unknown. Objectives: Determine if the rates of developing new chronic P. aeruginosa infection among adolescents and adults with CF has significantly changed between 2003 and 2012. Methods: The cohort consisted of individuals with CF followed in the CF Foundation Patient Registry who were 13 years of age and older without chronic Pseudomonas aeruginosa at baseline...
March 9, 2018: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
H Philpott, M K Dougherty, C C Reed, M Caldwell, D Kirk, D J Torpy, E S Dellon
BACKGROUND: Swallowed topical corticosteroids are prescribed for eosinophilic oesophagitis (EoE), but there is a theoretical risk of adrenal insufficiency from their use. AIMS: To determine if the use of topical corticosteroids to treat EoE is associated with the development of adrenal insufficiency. METHOD: We conducted a systematic review of the published literature from January 1, 1950 to April 1, 2017 using Pubmed, Embase, Web of Science and Cochrane Central...
March 5, 2018: Alimentary Pharmacology & Therapeutics
Flaviana G Silva, Eliana M Passos, Leandro E C Diniz, Adriano P Farias, Adenir V Teodoro, Marcelo F Fernandes, Michel Dollet
Coconut plantations are attacked by the lethal yellowing (LY), which is spreading rapidly with extremely destructive effects in several countries. The disease is caused by phytoplasmas that occur in the plant phloem and are transmitted by Haplaxius crudus (Van Duzee) (Auchenorrhyncha: Cixiidae). Owing to their phloem-sap feeding habit, other planthopper species possibly act as vectors. Here, we aimed at assessing the seasonal variation in the Auchenorrhyncha community in six dwarf coconut accessions. Also, we assessed the relative contribution of biotic (coconut accession) and abiotic (rainfall, temperature) in explaining Auchenorrhyncha composition and abundance...
February 27, 2018: Environmental Entomology
R Agnese, T Aramaki, I J Arnquist, W Baker, D Balakishiyeva, S Banik, D Barker, R Basu Thakur, D A Bauer, T Binder, M A Bowles, P L Brink, R Bunker, B Cabrera, D O Caldwell, R Calkins, C Cartaro, D G Cerdeño, Y Chang, Y Chen, J Cooley, B Cornell, P Cushman, M Daal, P C F Di Stefano, T Doughty, E Fascione, E Figueroa-Feliciano, M Fritts, G Gerbier, R Germond, M Ghaith, G L Godfrey, S R Golwala, J Hall, H R Harris, Z Hong, E W Hoppe, L Hsu, M E Huber, V Iyer, D Jardin, A Jastram, C Jena, M H Kelsey, A Kennedy, A Kubik, N A Kurinsky, B Loer, E Lopez Asamar, P Lukens, D MacDonell, R Mahapatra, V Mandic, N Mast, E H Miller, N Mirabolfathi, B Mohanty, J D Morales Mendoza, J Nelson, J L Orrell, S M Oser, K Page, W A Page, R Partridge, M Penalver Martinez, M Pepin, A Phipps, S Poudel, M Pyle, H Qiu, W Rau, P Redl, A Reisetter, T Reynolds, A Roberts, A E Robinson, H E Rogers, T Saab, B Sadoulet, J Sander, K Schneck, R W Schnee, S Scorza, K Senapati, B Serfass, D Speller, M Stein, J Street, H A Tanaka, D Toback, R Underwood, A N Villano, B von Krosigk, B Welliver, J S Wilson, M J Wilson, D H Wright, S Yellin, J J Yen, B A Young, X Zhang, X Zhao
We report the result of a blinded search for weakly interacting massive particles (WIMPs) using the majority of the SuperCDMS Soudan data set. With an exposure of 1690 kg d, a single candidate event is observed, consistent with expected backgrounds. This analysis (combined with previous Ge results) sets an upper limit on the spin-independent WIMP-nucleon cross section of 1.4×10^{-44} (1.0×10^{-44})  cm^{2} at 46  GeV/c^{2}. These results set the strongest limits for WIMP-germanium-nucleus interactions for masses >12  GeV/c^{2}...
February 9, 2018: Physical Review Letters
Dorothy L Patton, Yvonne C Sweeney, Audrey E Baldessari, Linda Cles, Laszlo Kari, Gail L Sturdevant, Chunfu Yang, Harlan D Caldwell
The Chlamydia trachomatis plasmid and inclusion membrane protein CT135 are virulence factors in the pathogenesis of murine female genital tract infection. To determine if these virulence factors play a similar role in female non-human primates, we infected pig-tailed macaques with the same C. trachomatis strains shown to be important in the murine model. Wild type C. trachomatis and its isogenic mutant strain deficient in both plasmid and CT135 were used to infect macaques. Macaques were given primary and repeated cervicovaginal challenges with the wild type and mutant strains...
February 20, 2018: Infection and Immunity
Dhaval Patel, Chuan Xu, Sureshbabu Nagarajan, Zhengchang Liu, Wayne O Hemphill, Runhua Shi, Vladimir N Uversky, Guy A Caldwell, Kim A Caldwell, Stephan N Witt
We probed the role of alpha-synuclein (α-syn) in modulating sorting nexin 3 (Snx3)-retromer-mediated recycling of iron transporters in Saccharomyces cerevisiae and Caenorhabditis elegans. In yeast, the membrane-bound heterodimer Fet3/Ftr1 is the high affinity iron importer. Fet3 is a membrane-bound multicopper ferroxidase, whose ferroxidase domain is orthologous to human ceruloplasmin (Cp), that oxidizes external Fe+2 to Fe+3; the Fe+3 ions then channel through the Ftr1 permease into the cell. When the concentration of external iron is low (< 1 µM), Fet3/Ftr1 is maintained on the plasma membrane by retrograde endocytic-recycling; whereas, when the concentration of external iron is high (> 10 µM), Fet3/Ftr1 is endocytosed and shunted to the vacuole for degradation...
February 14, 2018: Human Molecular Genetics
Young Kim, William A Abplanalp, Andrew D Jung, Rebecca M Schuster, Alex B Lentsch, Erich Gulbins, Charles C Caldwell, Timothy A Pritts
Microparticles are submicron vesicles shed from aging erythrocytes as a characteristic feature of the red blood cell (RBC) storage lesion. Exposure of pulmonary endothelial cells to RBC-derived microparticles promotes an inflammatory response, but the mechanisms underlying microparticle-induced endothelial cell activation are poorly understood. In the present study, cultured murine lung endothelial cells (MLECs) were treated with microparticles isolated from aged murine packed RBCs or vehicle. Microparticle-treated cells demonstrated increased expression of the adhesion molecules ICAM and E-selectin, as well as the cytokine, IL-6...
March 2018: Shock
Ian C Dunican, Charles C Higgins, Maddison J Jones, Michael W Clarke, Kevin Murray, Brian Dawson, John A Caldwell, Shona L Halson, Peter R Eastwood
OBJECTIVE: To examine the relationship between regular game-related caffeine consumption on sleep after an evening Super Rugby game. METHODS: Twenty elite rugby union players wore a wrist-activity monitor to measure sleep for three days before, three days after and on the night of an evening Super Rugby game (19:00-21:00). Players ingested caffeine as they would normally (i.e. before and sometimes during a game) and saliva samples were collected before (17:00) and after (21:30) the game for caffeine concentration...
February 12, 2018: European Journal of Sport Science
Hanna Kim, Carles Calatayud, Sangib Guha, Irene Fernández-Carasa, Laura Berkowitz, Iria Carballo-Carbajal, Mario Ezquerra, Rubén Fernández-Santiago, Pankaj Kapahi, Ángel Raya, Antonio Miranda-Vizuete, Jose Miguel Lizcano, Miquel Vila, Kim A Caldwell, Guy A Caldwell, Antonella Consiglio, Esther Dalfo
Parkinson's disease is associated with intracellular α-synuclein accumulation and ventral midbrain dopaminergic neuronal death in the Substantia Nigra of brain patients. The Rho GTPase pathway, mainly linking surface receptors to the organization of the actin and microtubule cytoskeletons, has been suggested to participate to Parkinson's disease pathogenesis. Nevertheless, its exact contribution remains obscure. To unveil the participation of the Rho GTPase family to the molecular pathogenesis of Parkinson's disease, we first used C elegans to demonstrate the role of the small GTPase RAC1 (ced-10 in the worm) in maintaining dopaminergic function and survival in the presence of alpha-synuclein...
February 10, 2018: Molecular Neurobiology
Zhenbo Cao, Lorna Mitchell, Oliver Hsia, Miriam Scarpa, Stuart T Caldwell, Arina D Alfred, Alexandra Gennaris, Jean-Francois Collet, Richard C Hartley, Neil J Bulleid
The oxidation of methionine residues in proteins occurs during oxidative stress and can lead to an alteration in protein function.  The enzyme methionine sulfoxide reductase reverses this modification.  Here we characterise the mammalian enzyme methionine sulfoxide reductase B3.  There are two splice variants of this enzyme that differ only in their N-terminal signal sequence, which directs the protein to either the ER or mitochondria.  We demonstrate here that the enzyme can complement a bacterial strain which is dependent upon methionine sulfoxide reduction for growth, that the purified recombinant protein is enzymatically active showing stereospecificity towards R -methionine sulfoxide, and identify the active site and two resolving cysteine residues...
February 2, 2018: Biochemical Journal
R William Caldwell, Paulo C Rodriguez, Haroldo A Toque, S Priya Narayanan, Ruth B Caldwell
The arginase enzyme developed in early life forms and was maintained during evolution. As the last step in the urea cycle, arginase cleaves l-arginine to form urea and l-ornithine. The urea cycle provides protection against excess ammonia, while l-ornithine is needed for cell proliferation, collagen formation, and other physiological functions. In mammals, increases in arginase activity have been linked to dysfunction and pathologies of the cardiovascular system, kidney, and central nervous system and also to dysfunction of the immune system and cancer...
April 1, 2018: Physiological Reviews
Ann E Caldwell, Kevin S Masters, John C Peters, Angela D Bryan, Jim Grigsby, Stephanie A Hooker, Holly R Wyatt, James O Hill
The inability to produce sustainable lifestyle modifications (e.g., physical activity, healthy diet) remains a major barrier to reducing morbidity and mortality from prevalent, preventable conditions. The objective of this paper is to present a model that builds on and extends foundational theory and research to suggest novel approaches that may help to produce lasting behavior change. The model aims to integrate factors not typically examined together in order to elucidate potential processes underlying a shift from behavior initiation to long-term maintenance...
February 5, 2018: Health Psychology Review
J K Clark, K P Coffey, W K Coblentz, B C Shanks, J D Caldwell, R E Muck, D Philipp, M A Borchardt, R T Rhein, W E Jokela, E A Backes, M G Bertram, W B Smith
Dairy slurry is used commonly as an animal-sourced fertilizer in agronomic production. However, residual effects of slurry application on intake and digestibility of alfalfa (Medicago sativa L.) silage from subsequent harvests are not well known. The objective of this study was to determine if moisture concentration of alfalfa silage and timing of dairy slurry application relative to subsequent harvest affected intake and digestibility by sheep. Katahdin crossbred ewes (n = 18; 48 ± 5.3 kg) in mid-gestation were stratified by BW and allocated randomly in each of 2 periods to 1 of 6 treatments arranged in a 2 × 3 factorial arrangement...
February 1, 2018: Journal of Animal Science
Rebecca Y Klinger, Olga G James, Salvador Borges-Neto, Tiffany Bisanar, Yi-Ju Li, Wenjing Qi, Miles Berger, Niccolò Terrando, Mark F Newman, P Murali Doraiswamy, Joseph P Mathew, Michael W Weiner, Paul Aisen, Michael Weiner, Paul Aisen, Ronald Petersen, Clifford R Jack, William Jagust, John Q Trojanowki, Arthur W Toga, Laurel Beckett, Robert C Green, Andrew J Saykin, John Morris, Leslie M Shaw, Zaven Khachaturian, Greg Sorensen, Maria Carrillo, Lew Kuller, Marc Raichle, Steven Paul, Peter Davies, Howard Fillit, Franz Hefti, David Holtzman, M Marcel Mesulam, William Potter, Peter Snyder, Adam Schwartz, Robert C Green, Tom Montine, Ronald Petersen, Paul Aisen, Ronald G Thomas, Michael Donohue, Sarah Walter, Devon Gessert, Tamie Sather, Gus Jiminez, Archana B Balasubramanian, Jennifer Mason, Iris Sim, Laurel Beckett, Danielle Harvey, Michael Donohue, Clifford R Jack, Matthew Bernstein, Nick Fox, Paul Thompson, Norbert Schuff, Charles DeCArli, Bret Borowski, Jeff Gunter, Matt Senjem, Prashanthi Vemuri, David Jones, Kejal Kantarci, Chad Ward, William Jagust, Robert A Koeppe, Norm Foster, Eric M Reiman, Kewei Chen, Chet Mathis, Susan Landau, John C Morris, Louis Nigel J Cairns, Erin Franklin, Lisa Taylor-Reinwald, Leslie M Shaw, John Q Trojanowki, Virginia Lee, Magdalena Korecka, Michal Figurski, Arthur W Toga, Karen Crawford, Scott Neu, Andrew J Saykin, Tatiana M Foroud, Steven Potkin, Li Shen, Kelley Faber, Sungeun Kim, Kwangsik Nho, Michael W Weiner, Lean Thal, Zaven Khachaturian, Leon Thal, Neil Buckholtz, Michael W Weiner, Peter J Snyder, William Potter, Steven Paul, Marilyn Albert, Richard Frank, Zaven Khachaturian, John Hsiao, Jeffrey Kaye, Joseph Quinn, Lisa Silbert, Betty Lind, Raina Carter, Sara Dolen, Lon S Schneider, Sonia Pawluczyk, Mauricio Becerra, Liberty Teodoro, Bryan M Spann, James Brewer, Helen Vanderswag, Adam Fleisher, Judith L Heidebrink, Joanne L Lord, Ronald Petersen, Sara S Mason, Colleen S Albers, David Knopman, Kris Johnson, Rachelle S Doody, Javier Villanueva-Meyer, Valory Pavlik, Victoria Shibley, Munir Chowdhury, Susan Rountree, Mimi Dang, Yaakov Stern, Lawrence S Honig, Karen L Bell, Beau Ances, John C Morris, Maria Carroll, Mary L Creech, Erin Franklin, Mark A Mintun, Stacy Schneider, Angela Oliver, Daniel Marson, David Geldmacher, Marissa Natelson Love, Randall Griffith, David Clark, John Brockington, Erik Roberson, Hillel Grossman, Effie Mitsis, Raj C Shah, Leyla deToledo-Morrell, Ranjan Duara, Maria T Greig-Custo, Warren Barker, Marilyn Albert, Chiadi Onyike, Daniel D'Agostino, Stephanie Kielb, Martin Sadowski, Mohammed O Sheikh, Anaztasia Ulysse, Mrunalini Gaikwad, Jeffrey R Petrella, Terence Z Wong, Edward Coleman, Steven E Arnold, Jason H Karlawish, David A Wolk, Christopher M Clark, Charles D Smith, Greg Jicha, Peter Hardy, Partha Sinha, Elizabeth Oates, Gary Conrad, Oscar L Lopez, MaryAnn Oakley, Donna M Simpson, Anton P Porsteinsson, Bonnie S Goldstein, Kim Martin, Kelly M Makino, M Saleem Ismail, Connie Brand, Steven G Potkin, Adrian Preda, Dana Nguyen, Kyle Womack, Dana Mathews, Mary Quiceno, Allan I Levey, James J Lah, Janet S Cellar, Jeffrey M Burns, Russell H Swerdlow, William M Brooks, Liana Apostolova, Kathleen Tingus, Ellen Woo, Daniel H S Silverman, Po H Lu, George Bartzokis, Neill R Graff-Radford, Francine Parfitt, Kim Poki-Walker, Martin R Farlow, Ann Marie Hake, Brandy R Matthews, Jared R Brosch, Scott Herring, Christopher H van Dyck, Richard E Carson, Martha G MacAvoy, Pradeep Varma, Howard Chertkow, Howard Bergman, Chris Hosein, Sandra Black, Bojana Stefanovic, Curtis Caldwell, Ging-Yuek, Robin Hsiung, Benita Mudge, Vesna Sossi, Howard Feldman, Michele Assaly, Elizabeth Finger, Stephen Pasternack, Irina Rachisky, Dick Trost, Andrew Kertesz, Charles Bernick, Donna Munic, Marek-Marsel Mesulam, Emily Rogalski, Kristine Lipowski, Sandra Weintraub, Borna Bonakdarpour, Diana Kerwin, Chuang-Kuo Wu, Nancy Johnson, Carl Sadowsky, Teresa Villena, Raymond Scott Turner, Kathleen Johnson, Brigid Reynolds, Reisa A Sperling, Keith A Johnson, Gad Marshall, Jerome Yesavage, Joy L Taylor, Barton Lane, Allyson Rosen, Jared Tinklenberg, Marwan N Sabbagh, Christine M Belden, Sandra A Jacobson, Sherye A Sirrel, Neil Kowall, Ronald Killiany, Andrew E Budson, Alexander Norbash, Patricia Lynn Johnson, Thomas O Obisesan, Saba Wolday, Joanne Allard, Alan Lerner, Paula Ogrocki, Curtis Tatsuoka, Parianne Fatica, Evan Fletcher, Pauline Maillard, John Olichney, Charles DeCarli, Owen Carmichael, Smita Kittur, Michael Borrie, T-Y Lee, Dr Rob Bartha, Sterling Johnson, Sanjay Asthana, Cynthia M Carlsson, Steven G Potkin, Adrian Preda, Dana Nguyen, Pierre Tariot, Anna Burke, Ann Marie Milliken, Nadira Trncic, Adam Fleisher, Stephanie Reeder, Vernice Bates, Horacio Capote, Michelle Rainka, Douglas W Scharre, Maria Kataki, Brendan Kelley, Earl A Zimmerman, Dzintra Celmins, Alice D Brown, Godfrey D Pearlson, Karen Blank, Karen Anderson, Laura A Flashman, Marc Seltzer, Mary L Hynes, Robert B Santulli, Kaycee M Sink, Leslie Gordineer, Jeff D Williamson, Pradeep Garg, Franklin Watkins, Brian R Ott, Geoffrey Tremont, Lori A Daiello, Stephen Salloway, Paul Malloy, Stephen Correia, Howard J Rosen, Bruce L Miller, David Perry, Jacobo Mintzer, Kenneth Spicer, David Bachman, Elizabeth Finger, Stephen Pasternak, Irina Rachinsky, John Rogers, Andrew Kertesz, Dick Drost, Nunzio Pomara, Raymundo Hernando, Antero Sarrael, Susan K Schultz, Karen Ekstam Smith, Hristina Koleva, Ki Won Nam, Hyungsub Shim, Norman Relkin, Gloria Chiang, Michael Lin, Lisa Ravdin, Amanda Smith, Balebail Ashok Raj, Kristin Fargher, Michael W Weiner, Paul Aisen, Michael Weiner, Paul Aisen, Ronald Petersen, Robert C Green, Danielle Harvey, Clifford R Jack, William Jagust, John C Morris, Andrew J Saykin, Leslie M Shaw, Arthur W Toga, John Q Trojanowki, Thomas Neylan, Jordan Grafman, Jordan Grafman, Robert C Green, Tom Montine, Michael Weiner, Ronald Petersen, Paul Aisen, Ronald G Thomas, Michael Donohue, Devon Gessert, Tamie Sather, Melissa Davis, Rosemary Morrison, Gus Jiminez, Thomas Neylan, Jacqueline Hayes, Shannon Finely, Danielle Harvey, Michael Donohue, Clifford R Jack, Matthew Bernstein, Bret Borowski, Jeff Gunter, Matt Senjem, Kejal Kantarci, Chad Ward, William Jagust, Robert A Koeppe, Norm Foster, Eric M Reiman, Kewei Chen, Susan Landau, John C Morris, Nigel J Cairns, Erin Householder, Leslie M Shaw, John Q Trojanowki, Virginia Lee, Magdalena Korecka, Michal Figurski, Arthur W Toga, Karen Crawford, Scott Neu, Andrew J Saykin, Tatiana M Foroud, Steven Potkin, Li Shen, Kelley Faber, Sungeun Kim, Kwangsik Nho, Michael W Weiner, Karl Friedl, Lon S Schneider, Sonia Pawluczyk, Mauricio Becerra, James Brewer, Helen Vanderswag, Yaakov Stern, Lawrence S Honig, Karen L Bell, Debra Fleischman, Konstantinos Arfanakis, Raj C Shah, Ranjan Duara, Daniel Varon, Maria T Greig, Jeffrey R Petrella, Anton P Porsteinsson, Bonnie Goldstein, Kimberly S Martin, Steven G Potkin, Adrian Preda, Dana Nguyen, Jacobo Mintzer, Dino Massoglia, Olga Brawman-Mintzer, Carl Sadowsky, Walter Martinez, Teresa Villena, William Jagust, Susan Landau, Howard Rosen, David Perry, Raymond Scott Turner, Kelly Behan, Brigid Reynolds, Reisa A Sperling, Keith A Johnson, Gad Marshall, Marwan N Sabbagh, Sandra A Jacobson, Sherye A Sirrel, Thomas O Obisesan, Saba Wolday, Joanne Allard, Sterling C Johnson, J Jay Fruehling, Sandra Harding, Elaine R Peskind, Eric C Petrie, Gail Li, Jerome A Yesavage, Joy L Taylor, Ansgar J Furst, Steven Chao, Norman Relkin, Gloria Chiang, Lisa Ravdin, James A Blumenthal, Jorn A Karhausen, Miklos D Kertai, Mihai V Podgoreanu, Mark Stafford-Smith, Madhav Swaminathan, David S Warner, Bonita L Funk, Narai Balajonda, Rachele Brassard, Mary Cooter, Yanne Toulgoat-Dubois, Peter Waweru, Michael A Babyak, James A Blumenthal, Jeffrey N Browndyke, Kathleen A Welsh-Bohmer, Michael H Sketch, Ellen R Bennett, Carmelo Graffagnino, Daniel T Laskowitz, Warren J Strittmatter, Kevin Collins, Greg Smigla, Ian Shearer, Thomas A D'Amico, Mani A Daneshmand, R Jeffrey G Gaca, Donald D Glower, Jack Haney, R David Harpole, Mathew G Hartwig, G Chad Hughes, Jacob A Klapper, Shu S Lin, Andrew J Lodge, Carmelo A Milano, Ryan P Plichta, Jacob N Schroeder, Peter K Smith, Betty C Tong
BACKGROUND: Amyloid deposition is a potential contributor to postoperative cognitive dysfunction. The authors hypothesized that 6-week global cortical amyloid burden, determined by F-florbetapir positron emission tomography, would be greater in those patients manifesting cognitive dysfunction at 6 weeks postoperatively. METHODS: Amyloid deposition was evaluated in cardiac surgical patients at 6 weeks (n = 40) and 1 yr (n = 12); neurocognitive function was assessed at baseline (n = 40), 6 weeks (n = 37), 1 yr (n = 13), and 3 yr (n = 9)...
February 1, 2018: Anesthesiology
Michael John Patton, Chih-Yu Chen, Chunfu Yang, Stuart McCorrister, Chris Grant, Garrett Westmacott, Xin-Yong Yuan, Estela Ochoa, Robert Fariss, William M Whitmire, John H Carlson, Harlan D Caldwell, Grant McClarty
Chlamydia trachomatis is an obligate intracellular bacterial pathogen that causes blinding trachoma and sexually transmitted disease. C. trachomatis isolates are classified into 2 biovars-lymphogranuloma venereum (LGV) and trachoma-which are distinguished biologically by their natural host cell infection tropism. LGV biovars infect macrophages and are invasive, whereas trachoma biovars infect oculo-urogenital epithelial cells and are noninvasive. The C. trachomatis plasmid is an important virulence factor in the pathogenesis of these infections...
January 30, 2018: MBio
Rohit Loomba, Yevgeniy Gindin, Zhaoshi Jiang, Eric Lawitz, Stephen Caldwell, C Stephen Djedjos, Ren Xu, Chuhan Chung, Robert P Myers, G Mani Subramanian, Zachary Goodman, Michael Charlton, Nezam H Afdhal, Anna Mae Diehl
A DNA methylation (DNAm) signature (the "Horvath clock") has been proposed as a measure of human chronological and biological age. We determined peripheral blood DNAm in patients with nonalcoholic steatohepatitis (NASH) and assessed whether accelerated aging occurs in these patients. DNAm signatures were obtained in patients with biopsy-proven NASH and stage 2-3 fibrosis. The DNAm profile from one test and two validation cohorts served as controls. Age acceleration was calculated as the difference between DNAm age and the predicted age based on the linear model derived from controls...
January 25, 2018: JCI Insight
Joanne N Caldwell, Anne M J van den Heuvel, Pete Kerry, Mitchell J Clark, Gregory E Peoples, Nigel A S Taylor
Physiologically trivial time differences for cooling the intrathoracic viscera of hyperthermic individuals have been reported between cold- and temperate-water immersion treatments. One explanation for that observation is reduced convective heat delivery to the skin during cold immersion, and this experiment was designed to test both the validity of that observation, and its underlying hypothesis. Eight healthy males participated in four head-out, water immersions: two when normothermic, and two following exercise-induced, moderate-profound hyperthermia...
January 18, 2018: Experimental Physiology
Jamie M Caldwell, Megan J Donahue, C Drew Harvell
Understanding how disease risk varies over time and across heterogeneous populations is critical for managing disease outbreaks, but this information is rarely known for wildlife diseases. Here, we demonstrate that variation in host and pathogen factors drive the direction, duration and intensity of a coral disease outbreak. We collected longitudinal health data for 200 coral colonies, and found that disease risk increased with host size and severity of diseased neighbours, and disease spread was highest among individuals between 5 and 20 m apart...
January 10, 2018: Proceedings. Biological Sciences
Harry M Lightsey, Peter C Noback, Jon-Michael E Caldwell, David P Trofa, Justin K Greisberg, J Turner Vosseller
BACKGROUND: Substantial progress has been made in characterizing the benefit of early functional rehabilitation following Achilles tendon repair (ATR). However, standardized ATR rehabilitation guidelines have yet to be produced. Furthermore, as patients increasingly use the Internet to independently retrieve health care content, access to standardized, clinically effective rehabilitation protocols is necessary. METHODS: Online ATR physical therapy protocols from US academic orthopaedic programs were reviewed...
January 1, 2018: Foot & Ankle Specialist
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