keyword
MENU ▼
Read by QxMD icon Read
search

C Caldwell

keyword
https://www.readbyqxmd.com/read/28934392/nceh-1-modulates-cholesterol-metabolism-and-protects-against-%C3%AE-synuclein-toxicity-in-a-c-elegans-model-of-parkinson-s-disease
#1
Siyuan Zhang, Samantha A Glukhova, Kim A Caldwell, Guy A Caldwell
Parkinson's disease (PD) is an aging-associated neurodegenerative disease affecting millions worldwide. Misfolding, oligomerization and accumulation of the human α-synuclein protein is a key pathological hallmark of PD and is associated with the progressive loss of dopaminergic neurons over the course of aging. Lifespan extension via the suppression of IGF-1/insulin-like signaling (IIS) offers a possibility to retard disease onset through induction of metabolic changes that provide neuroprotection. The nceh-1 gene of Caenorhabditis elegans encodes an ortholog of neutral cholesterol ester hydrolase 1 (NCEH-1), an IIS downstream protein that was identified in a screen as a modulator of α-synuclein accumulation in vivo...
October 1, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28912650/the-effects-combining-cryocompression-therapy-following-an-acute-bout-of-resistance-exercise-on-performance-and-recovery
#2
William H DuPont, Brek J Meuris, Vincent H Hardesty, Emily C Barnhart, Landon H Tompkins, Morricia J P Golden, Clayton J Usher, Paul A Spence, Lydia K Caldwell, Emily M Post, Matthew K Beeler, William J Kraemer
Compression and cold therapy used separately have shown to reduce negative effects of tissue damage. The combining compression and cold therapy (cryocompression) as a single recovery modality has yet to be fully examined. To examine the effects of cryocompression on recovery following a bout of heavy resistance exercise, recreationally resistance trained men (n =16) were recruited, matched, and randomly assigned to either a cryocompression group (CRC) or control group (CON). Testing was performed before and then immediately after exercise, 60 minutes, 24 hours, and 48 hours after a heavy resistance exercise workout (barbell back squats for 4 sets of 6 reps at 80% 1RM, 90 sec rest between sets, stiff legged deadlifts for 4 sets of 8 reps at 1...
September 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28892558/the-ask1-inhibitor-selonsertib-in-patients-with-nonalcoholic-steatohepatitis-a-randomized-phase-2-trial
#3
Rohit Loomba, Eric Lawitz, Parvez S Mantry, Saumya Jayakumar, Stephen H Caldwell, Hays Arnold, Anna Mae Diehl, C Stephen Djedjos, Ling Han, Robert P Myers, G Mani Subramanian, John G McHutchison, Zachary D Goodman, Nezam H Afdhal, Michael R Charlton
Inhibition of apoptosis signal-regulating kinase 1 (ASK1), a serine/threonine kinase, leads to improvement in inflammation and fibrosis in animal models of nonalcoholic steatohepatitis (NASH). We evaluated the safety and efficacy of selonsertib, a selective inhibitor of ASK1, alone or in combination with simtuzumab, in patients with NASH and stage 2 or 3 liver fibrosis. In this multicenter phase 2 trial, 72 patients were randomized to receive 24 weeks of open-label treatment with either 6 or 18 mg of selonsertib orally once daily with or without once-weekly injections of 125 mg of simtuzumab, or simtuzumab alone...
September 11, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28890317/mitoneod-a-mitochondria-targeted-superoxide-probe
#4
Maria M Shchepinova, Andrew G Cairns, Tracy A Prime, Angela Logan, Andrew M James, Andrew R Hall, Sara Vidoni, Sabine Arndt, Stuart T Caldwell, Hiran A Prag, Victoria R Pell, Thomas Krieg, John F Mulvey, Pooja Yadav, James N Cobley, Thomas P Bright, Hans M Senn, Robert F Anderson, Michael P Murphy, Richard C Hartley
Mitochondrial superoxide (O2(⋅-)) underlies much oxidative damage and redox signaling. Fluorescent probes can detect O2(⋅-), but are of limited applicability in vivo, while in cells their usefulness is constrained by side reactions and DNA intercalation. To overcome these limitations, we developed a dual-purpose mitochondrial O2(⋅-) probe, MitoNeoD, which can assess O2(⋅-) changes in vivo by mass spectrometry and in vitro by fluorescence. MitoNeoD comprises a O2(⋅-)-sensitive reduced phenanthridinium moiety modified to prevent DNA intercalation, as well as a carbon-deuterium bond to enhance its selectivity for O2(⋅-) over non-specific oxidation, and a triphenylphosphonium lipophilic cation moiety leading to the rapid accumulation within mitochondria...
August 24, 2017: Cell Chemical Biology
https://www.readbyqxmd.com/read/28885961/effectiveness-of-ice-sheet-cooling-following-exertional-hyperthermia
#5
Cory L Butts, Debora L Spisla, J D Adams, Cody R Smith, Kathleen M Paulsen, Aaron R Caldwell, Matthew S Ganio, Brendon P McDermott
BACKGROUND: The procedure of wrapping a heat casualty in ice-water soaked bed sheets to reduce core temperature has received little investigation, despite the practice and recommendation for its use in some military settings. Thus, the purpose of this study was to investigate the cooling efficacy of ice-sheet cooling (ISC) following exertional hyperthermia. METHODS: 13 (11 males, 2 females) participants (age = 23 ± 3 years, height = 176.5 ± 10.3 cm, mass = 78...
September 2017: Military Medicine
https://www.readbyqxmd.com/read/28866130/differential-effects-of-imipramine-and-cort118335-glucocorticoid-receptor-modulator-mineralocorticoid-receptor-antagonist-on-brain-endocrine-stress-responses-and-depression-like-behavior-in-female-rats
#6
Elizabeth T Nguyen, Jody L Caldwell, Joshua Streicher, Valentina Ghisays, Nikolaus J Balmer, Christina M Estrada, Matia B Solomon
Depression is commonly associated with hypothalamic-pituitary adrenal (HPA) axis dysfunction that primarily manifests as aberrant glucocorticoid secretion. Glucocorticoids act on Type I mineralocorticoid (MR) and Type II glucocorticoid receptors (GR) to modulate mood and endocrine responses. Successful antidepressant treatment normalizes HPA axis function, in part due to modulatory effects on MR and GR in cortico-limbic structures. Although women are twice as likely to suffer from depression, little is known about how antidepressants modulate brain, endocrine, and behavioral stress responses in females...
September 1, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28836844/behavioral-and-physiologic-changes-in-holstein-steers-experimentally-infected-with-mannheimia-haemolytica
#7
Nicole L Eberhart, Jennifer M Storer, Marc Caldwell, Arnold M Saxton, Peter D Krawczel
OBJECTIVE To evaluate changes in behavior and surfactant protein (SP) A and D concentrations in serum and bronchoalveolar lavage fluid (BALF) samples of calves experimentally infected with Mannheimia haemolytica. ANIMALS Twelve 4- to 5-month-old Holstein steers. PROCEDURES Calves were divided into 2 treatment groups and instrumented with a data logger to collect behavioral data. After 10 days of acclimation, calves were experimentally inoculated with 3 × 10(9) CFUs to 5 × 10(9) CFUs of M haemolytica suspended in approximately 5 mL of PBS solution (infected calves; n = 6) or 5 mL of PBS solution without M haemolytica (control calves; 6) through a catheter into the right accessory lung lobe...
September 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28809569/rh-catalyzed-conjugate-addition-of-aryl-and-alkenyl-boronic-acids-to-%C3%AE-methylene-%C3%AE-lactones-stereoselective-synthesis-of-trans-3-4-disubstituted-%C3%AE-lactones
#8
Christian A Malapit, Irungu K Luvaga, Donald R Caldwell, Nicholas K Schipper, Amy R Howell
A one-step preparation of 3,4-disubstituted β-lactones through Rh-catalyzed conjugate addition of aryl or alkenyl boronic acids to α-methylene-β-lactones is described. The operationally simple, stereoselective transformation provides a broad range of β-lactones from individual α-methylene-β-lactone templates. This methodology allowed for a direct, final-step C-3 diversification of nocardiolactone, an antimicrobial natural product.
August 15, 2017: Organic Letters
https://www.readbyqxmd.com/read/28796194/a-murine-model-of-persistent-inflammation-immune-suppression-and-catabolism-syndrome
#9
Amanda M Pugh, Nicholas J Auteri, Holly S Goetzman, Charles C Caldwell, Vanessa Nomellini
Critically ill patients that survive sepsis can develop a Persistent Inflammation, Immunosuppression, and Catabolism Syndrome (PICS), which often leads to extended recovery periods and multiple complications. Here, we utilized a cecal ligation and puncture (CLP) method in mice with the goal of creating a model that concurrently displays all the characteristics of PICS. We observed that, after eight days, mice that survive the CLP develop persistent inflammation with significant myelopoiesis in the bone marrow and spleen...
August 10, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28769783/age-and-chronicity-of-administration-dramatically-influenced-the-impact-of-low-dose-paraquat-exposure-on-behavior-and-hypothalamic-pituitary-adrenal-activity
#10
Chris A Rudyk, Jessica McNeill, Natalie Prowse, Zach Dwyer, Kyle Farmer, Darcy Litteljohn, Warren Caldwell, Shawn Hayley
Little is known of the age-dependent and long-term consequences of low exposure levels of the herbicide and dopaminergic toxicant, paraquat. Thus, we assessed the dose-dependent effects of paraquat using a typical short-term (3 week) exposure procedure, followed by an assessment of the effects of chronic (16 weeks) exposure to a very low dose (1/10th of what previously induced dopaminergic neuronal damage). Short term paraquat treatment dose-dependently induced deficits in locomotion, sucrose preference and Y-maze performance...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28766191/promoting-afterschool-quality-and-positive-youth-development-cluster-randomized-trial-of-the-pax-good-behavior-game
#11
Emilie Phillips Smith, D Wayne Osgood, Yoonkyung Oh, Linda C Caldwell
This randomized trial tested a strategy originally developed for school settings, the Pax Good Behavior Game (PAX GBG), in the new context of afterschool programs. We examined this approach in afterschool since 70% of all juvenile crime occurs between the hours of 3-6 pm, making afterschool an important setting for prevention and promotion. Dual-career and working families need monitoring and supervision for their children in quality settings that are safe and appropriately structured. While substantial work has identified important features of afterschool programs, increasing attention is being given to how to foster quality...
August 1, 2017: Prevention Science: the Official Journal of the Society for Prevention Research
https://www.readbyqxmd.com/read/28752958/increased-ca-buffering-underpins-remodelling-of-ca-2-handling-in-old-sheep-atrial-myocytes
#12
J D Clarke, J L Caldwell, C M Pearman, D A Eisner, A W Trafford, K M Dibb
Many cardiovascular diseases, including those affecting the atria, are associated with advancing age. Arrhythmias, including those in the atria, can arise due to electrical remodelling or alterations in Ca(2+) homeostasis. In the atria, age-associated changes in the action potential have been documented. However, little is known about remodelling of intracellular Ca(2+) homeostasis in the healthy aged heart. Using single atrial myocytes from young and aged Welsh Mountain sheep, we show the free Ca(2+) transient amplitude and rate of decay of systolic Ca(2+) decrease with age while sarcoplasmic reticulum (SR) Ca content increases...
July 28, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28735604/measuring-home-environments-across-cultures-invariance-of-the-home-scale-across-eight-international-sites-from-the-mal-ed-study
#13
Paul C Jones, Laura L Pendergast, Barbara A Schaefer, Muneera Rasheed, Erling Svensen, Rebecca Scharf, Rita Shrestha, Angelina Maphula, Reeba Roshan, Zeba Rasmussen, Jessica C Seidman, Laura E Murray-Kolb
The home environment provides the context for much of a child's early development. Examples of important aspects of the home environment include safety, cleanliness, and opportunities for cognitive stimulation. This study sought to examine the psychometric properties of an adapted form of the Home Observation for the Measurement of the Environment (HOME; Caldwell & Bradley, 1984, 2003) across the eight international sites of the MAL-ED project (Dhaka, Bangladesh; Vellore, India; Bhakatapur, Nepal; Naushahro Feroze, Pakistan; Fortaleza, Brazil; Loreto, Peru; Venda, South Africa; Haydom, Tanzania), to identify a factor structure that fit the data at all sites, and to derive a subset of items that could be used to examine home environmental characteristics across sites...
October 2017: Journal of School Psychology
https://www.readbyqxmd.com/read/28708968/rv3723-luca-coordinates-fatty-acid-and-cholesterol-uptake-in-mycobacterium-tuberculosis
#14
Evgeniya V Nazarova, Christine R Montague, Thuy La, Kaley M Wilburn, Neelima Sukumar, Wonsik Lee, Shannon Caldwell, David G Russell, Brian C VanderVen
Pathogenic bacteria have evolved highly specialized systems to extract essential nutrients from their hosts. Mycobacterium tuberculosis (Mtb) scavenges lipids (cholesterol and fatty acids) to maintain infections in mammals but mechanisms and proteins responsible for the import of fatty acids in Mtb were previously unknown. Here, we identify and determine that the previously uncharacterized protein Rv3723/LucA, functions to integrate cholesterol and fatty acid uptake in Mtb. Rv3723/LucA interacts with subunits of the Mce1 and Mce4 complexes to coordinate the activities of these nutrient transporters by maintaining their stability...
June 27, 2017: ELife
https://www.readbyqxmd.com/read/28699548/when-communities-are-really-in-control-ethical-issues-surrounding-community-mobilisation-for-dengue-prevention-in-mexico-and-nicaragua
#15
REVIEW
Robert J Ledogar, Carlos Hernández-Alvarez, Amy C Morrison, Jorge Arosteguí, Arcadio Morales-Perez, Elizabeth Nava-Aguilera, José Legorreta-Soberanis, Dawn Caldwell, Josefina Coloma, Eva Harris, Neil Andersson
We discuss two ethical issues raised by Camino Verde, a 2011-2012 cluster-randomised controlled trial in Mexico and Nicaragua, that reduced dengue risk though community mobilisation. The issues arise from the approach adopted by the intervention, one called Socialisation of Evidence for Participatory Action. Community volunteer teams informed householders of evidence about dengue, its costs and the life-cycle of Aedes aegypti mosquitoes, while showing them the mosquito larvae in their own water receptacles, without prescribing solutions...
May 30, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28697107/relationship-between-labor-and-delivery-unit-management-practices-and-maternal-outcomes
#16
REVIEW
Avery C Plough, Grace Galvin, Zhonghe Li, Stuart R Lipsitz, Shehnaz Alidina, Natalie J Henrich, Lisa R Hirschhorn, William R Berry, Atul A Gawande, Doris Peter, Rory McDonald, Donna L Caldwell, Janet H Muri, Debra Bingham, Aaron B Caughey, Eugene R Declercq, Neel T Shah
OBJECTIVE: To define, measure, and characterize key competencies of managing labor and delivery units in the United States and assess the associations between unit management and maternal outcomes. METHODS: We developed and administered a management measurement instrument using structured telephone interviews with both the primary nurse and physician managers at 53 diverse hospitals across the United States. A trained interviewer scored the managers' interview responses based on management practices that ranged from most reactive (lowest scores) to most proactive (highest scores)...
August 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28690205/bronchoalveolar-lavage-microvesicles-protect-burn-injured-mice-from-pulmonary-infection
#17
Teresa C Rice, Amanda M Pugh, Brent T Xia, Aaron P Seitz, Brynne E Whitacre, Erich Gulbins, Charles C Caldwell
BACKGROUND: Pseudomonas aeruginosa is a major cause of morbidity and mortality among burn patients, despite antibiotic therapy. There is a need to identify innate immune defenses that prevent P aeruginosa infection in injured adults in an effort to find therapeutic alternatives to antibiotics. Here, we tested our hypothesis that microvesicles (MVs) in bronchoalveolar (BAL) fluid have a role in the immunity of the lung in response to pathogens. STUDY DESIGN: Microvesicles were isolated from murine BAL fluid, quantified using Nanoparticle Tracking Analysis, and injected into burn-injured mice before P aeruginosa infection...
July 6, 2017: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/28688660/impact-of-tranexamic-acid-on-coagulation-and-inflammation-in-murine-models-of-traumatic-brain-injury-and-hemorrhage
#18
Ryan M Boudreau, Mark Johnson, Rosalie Veile, Lou Ann Friend, Holly Goetzman, Timothy A Pritts, Charles C Caldwell, Amy T Makley, Michael D Goodman
BACKGROUND: Posttraumatic coagulopathy and inflammation can exacerbate secondary cerebral damage after traumatic brain injury (TBI). Tranexamic acid (TXA) has been shown clinically to reduce mortality in hemorrhaging and head-injured trauma patients and has the potential to mitigate secondary brain injury with its reported antifibrinolytic and antiinflammatory properties. We hypothesized that TXA would improve posttraumatic coagulation and inflammation in a murine model of TBI alone and in a combined injury model of TBI and hemorrhage (TBI/H)...
July 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28685690/can-untargeted-metabolomics-be-utilized-in-drug-discovery-development
#19
G Caldwell, Gregory C Leo
Untargeted metabolomics is a promising approach for reducing the significant attrition rate for discovering and developing drugs in the pharmaceutical industry. This review aims to highlight the practical decision-making value of untargeted metabolomics for the advancement of drug candidates in drug discovery/development including potentially identifying and validating novel therapeutic targets, creating alternative screening paradigms, facilitating the selection of specific and translational metabolite biomarkers, identifying metabolite signatures for the drug efficacy mechanism of action, and understanding potential drug-induced toxicity...
July 7, 2017: Current Topics in Medicinal Chemistry
https://www.readbyqxmd.com/read/28685447/diet-induced-ketosis-protects-against-focal-cerebral-ischemia-in-mouse
#20
Kui Xu, Lena Ye, Katyayini Sharma, Yongming Jin, Matthew M Harrison, Tylor Caldwell, Jessica M Berthiaume, Yu Luo, Joseph C LaManna, Michelle A Puchowicz
Over the past decade we have consistently shown that ketosis is neuroprotective against ischemic insults in rats. We reported that diet-induced ketotic rats had a significant reduction in infarct volume when subjected to middle cerebral artery occlusion (MCAO), and improved survival and recovery after cardiac arrest and resuscitation. The neuroprotective mechanisms of ketosis (via ketogenic diet; KG) include (i) ketones are alternate energy substrates that can restore energy balance when glucose metabolism is deficient and (ii) ketones modulate cell-signalling pathways that are cytoprotective...
2017: Advances in Experimental Medicine and Biology
keyword
keyword
12016
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"