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https://www.readbyqxmd.com/read/29659737/feeding-related-gut-microbial-composition-associates-with-peripheral-t-cell-activation-and-mucosal-gene-expression-in-african-infants
#1
Lianna F Wood, Bryan P Brown, Katie Lennard, Ulas Karaoz, Enock Havyarimana, Jo-Ann S Passmore, Anneke C Hesseling, Paul T Edlefsen, Louise Kuhn, Nicola Mulder, Eoin L Brodie, Donald L Sodora, Heather B Jaspan
Background: Exclusive breastfeeding reduces the rate of postnatal HIV transmission compared to non-exclusive breastfeeding, however the mechanisms of this protection are unknown. Our study was designed to interrogate the mechanisms underlying the protective effect of exclusive breastfeeding (EBF). Methods: A prospective, longitudinal study of infants from a high HIV prevalence, low-income setting in South Africa. We evaluated the role of any non-breastmilk feeds excluding prescribed medicines...
April 5, 2018: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29603403/comparison-of-calorie-and-protein-intake-of-very-low-birth-weight-infants-receiving-mother-s-own-milk-or-donor-milk-when-the-nutrient-composition-of-human-milk-is-measured-with-a-breast-milk-analyzer
#2
Melanie Newkirk, Fauzia Shakeel, Prabhu Parimi, Pamela Rothpletz-Puglia, Rachael Patusco, Andrea Fleisch Marcus, Rebecca Brody
BACKGROUND: In premature infants, donor breast milk (DBM) is assumed to provide reduced nutrients vs. mother's own milk (MOM). This study examined calorie and protein delivery when very low birth weight infants were fed fortified MOM or DBM, with a known nutrient composition, relative to established nutrition recommendations and to determine if there were differences between the groups. METHODS: A retrospective medical record review was conducted in 29 very low birth weight infants receiving MOM or DBM...
March 30, 2018: Nutrition in Clinical Practice
https://www.readbyqxmd.com/read/29594499/herbivore-removal-reduces-influence-of-arbuscular-mycorrhizal-fungi-on-plant-growth-and-tolerance-in-an-east-african-savanna
#3
Jonathan B González, Renee H Petipas, Oscar Franken, E Toby Kiers, Kari E Veblen, Alison K Brody
The functional relationship between arbuscular mycorrhizal fungi (AMF) and their hosts is variable on small spatial scales. Here, we hypothesized that herbivore exclusion changes the AMF community and alters the ability of AMF to enhance plant tolerance to grazing. We grew the perennial bunchgrass, Themeda triandra Forssk in inoculum from soils collected in the Kenya Long-term Exclosure Experiment where treatments representing different levels of herbivory have been in place since 1995. We assessed AMF diversity in the field, using terminal restriction fragment length polymorphism and compared fungal diversity among treatments...
March 29, 2018: Oecologia
https://www.readbyqxmd.com/read/29556109/dynamic-root-exudate-chemistry-and-microbial-substrate-preferences-drive-patterns-in-rhizosphere-microbial-community-assembly
#4
Kateryna Zhalnina, Katherine B Louie, Zhao Hao, Nasim Mansoori, Ulisses Nunes da Rocha, Shengjing Shi, Heejung Cho, Ulas Karaoz, Dominique Loqué, Benjamin P Bowen, Mary K Firestone, Trent R Northen, Eoin L Brodie
Like all higher organisms, plants have evolved in the context of a microbial world, shaping both their evolution and their contemporary ecology. Interactions between plant roots and soil microorganisms are critical for plant fitness in natural environments. Given this co-evolution and the pivotal importance of plant-microbial interactions, it has been hypothesized, and a growing body of literature suggests, that plants may regulate the composition of their rhizosphere to promote the growth of microorganisms that improve plant fitness in a given ecosystem...
April 2018: Nature Microbiology
https://www.readbyqxmd.com/read/29526096/development-of-fully-degradable-phosphonium-functionalized-amphiphilic-diblock-copolymers-for-nucleic-acids-delivery
#5
Yannick P Borguet, Sarosh Khan, Amandine Noel, Sean P Gunsten, Steven L Brody, Mahmoud Elsabahy, Karen L Wooley
To expand the range of functional polymer materials to include fully hydrolytically degradable systems that bear bioinspired phosphorus-containing linkages both along the backbone and as cationic side chain moieties for packaging and delivery of nucleic acids, phosphonium-functionalized polyphosphoester- block-poly(l-lactide) copolymers of various compositions were synthesized, fully characterized, and their self-assembly into nanoparticles were studied. First, an alkyne-functionalized polyphosphoester- block-poly(l-lactide) copolymer was synthesized via a one pot sequential ring opening polymerization of an alkyne-functionalized phospholane monomer, followed by the addition of l-lactide to grow the second block...
March 11, 2018: Biomacromolecules
https://www.readbyqxmd.com/read/29491176/the-combined-impacts-of-experimental-defaunation-and-logging-on-seedling-traits-and-diversity
#6
Alys Granados, Henry Bernard, Jedediah F Brodie
Animals can have both positive (e.g. via seed dispersal) and negative (e.g. via herbivory) impacts on plants. The net effects of these interactions remain difficult to predict and may be affected by overhunting and habitat disturbance, two widespread threats to tropical forests. Recent studies have documented their separate effects on plant recruitment but our understanding of how defaunation and logging interact to influence tropical tree communities is limited. From 2013 to 2016, we followed the fate of marked tree seedlings ( n = 1489) from 81 genera in and outside experimental plots...
February 28, 2018: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29453937/trajectory-classes-of-cannabis-use-and-heavy-drinking-among-rural-african-american-adolescents-multilevel-predictors-of-class-membership
#7
Allen W Barton, Gene H Brody, Tamika C B Zapolski, Trenette C Goings, Steven M Kogan, Michael Windle, Tianyi Yu
AIMS: To inform research on the etiology and prevention of substance use among rural African American youth by (a) identifying developmental trajectory classes of cannabis use and heavy drinking across adolescence and young adulthood, and (b) examining associations between trajectory class membership and multi-level assessments of risk factors. DESIGN: A prospective study spanning nine years with assessments of cannabis use and heavy drinking, the catecholamines epinephrine and norepinephrine, perceived stress, and psychosocial risk factors...
February 17, 2018: Addiction
https://www.readbyqxmd.com/read/29194972/a-composite-noninvasive-index-correlates-with-liver-fibrosis-scores-in-post-fontan-patients-preliminary-findings
#8
William N Evans, Ruben J Acherman, Michael L Ciccolo, Sergio A Carrillo, Alvaro Galindo, Abraham Rothman, Gary A Mayman, Elizabeth A Adams, Leigh C Reardon, Brody J Winn, Noel S Yumiaco, Lesley Shimuizu, Yoko Inanaga, Rowena J Deleon, Humberto Restrepo
OBJECTIVE: We hypothesized that clinic-based, hepatic-ultrasound, elastography measurements, either alone or in combination with other noninvasive variables, might correlate with liver-biopsy fibrosis scores in patients post-Fontan. METHODS: Between March 2012 and February 2017, we identified patients post-Fontan that underwent elective cardiac catheterization and simultaneous transvenous hepatic biopsy. From this group, we selected patients that met inclusion criteria for liver-ultrasound, shear-wave elastography...
January 2018: Congenital Heart Disease
https://www.readbyqxmd.com/read/29171667/exposure-to-parental-depression-in-adolescence-and-risk-for-metabolic-syndrome-in-adulthood
#9
Katherine B Ehrlich, Edith Chen, Tianyi Yu, Gregory E Miller, Gene H Brody
The psychosocial consequences of living with a depressed parent have been well characterized. Less well known, however, is how this exposure is predictive of later physical health problems. The present study evaluated how parental depression across youths' adolescence (ages 11-18) was associated with youth metabolic syndrome at age 25 (n = 391). Youth self-regulation and health behaviors were considered as possible moderators of the link between parental depression and youth metabolic syndrome. Analyses revealed that parental depression in adolescence was associated with a composite score reflecting metabolic syndrome components in early adulthood...
November 24, 2017: Child Development
https://www.readbyqxmd.com/read/29138307/microdiversity-of-an-abundant-terrestrial-bacterium-encompasses-extensive-variation-in-ecologically-relevant-traits
#10
Alexander B Chase, Ulas Karaoz, Eoin L Brodie, Zulema Gomez-Lunar, Adam C Martiny, Jennifer B H Martiny
Much genetic diversity within a bacterial community is likely obscured by microdiversity within operational taxonomic units (OTUs) defined by 16S rRNA gene sequences. However, it is unclear how variation within this microdiversity influences ecologically relevant traits. Here, we employ a multifaceted approach to investigate microdiversity within the dominant leaf litter bacterium, Curtobacterium , which comprises 7.8% of the bacterial community at a grassland site undergoing global change manipulations. We use cultured bacterial isolates to interpret metagenomic data, collected in situ over 2 years, together with lab-based physiological assays to determine the extent of trait variation within this abundant OTU...
November 14, 2017: MBio
https://www.readbyqxmd.com/read/29069998/composite-small-lymphocytic-lymphoma-chronic-lymphocytic-leukemia-and-follicular-lymphoma-a-clinicopathological-study-of-six-cases
#11
Fatima Zahra Jelloul, Qiang Hua Chen, Tianyu Yang, Nina Haghi, Judith Brody, Xinmin Zhang, Silvat Sheikh-Fayyaz
BACKGROUND: Composite small lymphocytic lymphoma/chronic lymphocytic leukemia (SLL/CLL) and follicular lymphoma (FL) is extremely rare, and only 13 cases have been reported previously. METHODS: We identified 6 cases of composite SLL/CLL and FL in our database and studied their clinical, histologic, immunophenotypic, and cytogenetic features. A literature review of the existing cases was also conducted. RESULTS: The patients included 4 males and 2 females, with a median age of 72 years...
October 1, 2017: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28660670/defaunation-and-habitat-disturbance-interact-synergistically-to-alter-seedling-recruitment
#12
Alys Granados, Jedediah F Brodie, Henry Bernard, Michael J O'Brien
Vertebrate granivores destroy plant seeds, but whether animal-induced seed mortality alters plant recruitment varies with habitat context, seed traits, and among granivore species. An incomplete understanding of seed predation makes it difficult to predict how widespread extirpations of vertebrate granivores in tropical forests might affect tree communities, especially in the face of habitat disturbance. Many tropical forests are simultaneously affected by animal loss as well as habitat disturbance, but the consequences of each for forest regeneration are often studied separately or additively, and usually on a single plant demographic stage...
October 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28625783/probabilistic-invasion-underlies-natural-gut-microbiome-stability
#13
Benjamin Obadia, Z T Güvener, Vivian Zhang, Javier A Ceja-Navarro, Eoin L Brodie, William W Ja, William B Ludington
Species compositions of gut microbiomes impact host health [1-3], but the processes determining these compositions are largely unknown. An unexplained observation is that gut species composition varies widely between individuals but is largely stable over time within individuals [4, 5]. Stochastic factors during establishment may drive these alternative stable states (colonized versus non-colonized) [6, 7], which can influence susceptibility to pathogens, such as Clostridium difficile. Here we sought to quantify and model the dose response, dynamics, and stability of bacterial colonization in the fruit fly (Drosophila melanogaster) gut...
July 10, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28422817/incidence-and-implications-of-left-ventricular-distention-during-venoarterial-extracorporeal-membrane-oxygenation-support
#14
Lauren K Truby, Koji Takeda, Christine Mauro, Melana Yuzefpolskaya, Arthur R Garan, Ajay J Kirtane, Veli K Topkara, Darryl Abrams, Daniel Brodie, Paolo C Colombo, Yoshifumi Naka, Hiroo Takayama
Left ventricular distention (LVD) during venoarterial extracorporeal membrane oxygenation (VA-ECMO) support is increasingly recognized but seldom reported in the literature. The current study defined LVD as not present (LVD-); subclinical (LVD+, evidence of pulmonary edema on chest radiograph AND pulmonary artery diastolic blood pressure greater than 25 mm Hg within the first 2 hours of intensive care unit admission); or clinical (LVD++, need for decompression of the left ventricle immediately following VA-ECMO initiation)...
May 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28356893/alzheimer-s-toxic-amyloid-beta-oligomers-unwelcome-visitors-to-the-na-k-atpase-alpha3-docking-station
#15
Thomas DiChiara, Nadia DiNunno, Jeffrey Clark, Riana Lo Bu, Erika N Cline, Madeline G Rollins, Yuesong Gong, David L Brody, Stephen G Sligar, Pauline T Velasco, Kirsten L Viola, William L Klein
Toxic amyloid beta oligomers (AβOs) are known to accumulate in Alzheimer's disease (AD) and in animal models of AD. Their structure is heterogeneous, and they are found in both intracellular and extracellular milieu. When given to CNS cultures or injected ICV into non-human primates and other non-transgenic animals, AβOs have been found to cause impaired synaptic plasticity, loss of memory function, tau hyperphosphorylation and tangle formation, synapse elimination, oxidative and ER stress, inflammatory microglial activation, and selective nerve cell death...
March 2017: Yale Journal of Biology and Medicine
https://www.readbyqxmd.com/read/28284129/biochar-produced-from-biosolids-using-a-single-mode-microwave-characterisation-and-its-potential-for-phosphorus-removal
#16
Elsa Antunes, James Schumann, Graham Brodie, Mohan V Jacob, Philip A Schneider
The amount of biosolids increases every year, and social and environmental concerns are also rising due to heavy metals and pathogen contamination. Even though biosolids are considered as a waste material, they could be used as a precursor in several applications, especially in agriculture due to the presence of essential nutrients. Microwave assisted pyrolysis (MWAP) is a promising technology to safely manage biosolids, while producing value-added products, such as biochar, that can be used to improve soil fertility...
July 1, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28240675/impact-of-chronic-statin-therapy-on-clinical-presentation-and-underlying-lesion-morphology-in-patients-undergoing-percutaneous-intervention-an-adapt-des-ivus-substudy
#17
Tadayuki Kadohira, Gary S Mintz, Cristiano F Souza, Bernhard Witzenbichler, D Christopher Metzger, Michael J Rinaldi, Ernest L Mazzaferri, Peter L Duffy, Giora Weisz, Thomas D Stuckey, Bruce R Brodie, Aaron Crowley, Ajay J Kirtane, Gregg W Stone, Akiko Maehara
OBJECTIVE: Previous intravascular ultrasound (IVUS) studies have not established a relationship between chronic statin use and plaque morphology and composition in patients undergoing percutaneous coronary intervention (PCI). We sought to use pre-PCI grayscale and virtual histology (VH)-IVUS to assess plaque morphology and composition in patients treated with chronic statin therapy compared with patients who were not taking statins before admission and PCI. METHODS: In a prespecified substudy of the Assessment of Dual AntiPlatelet Therapy with Drug-Eluting Stents study, pre-PCI grayscale and VH-IVUS were performed in 780 patients with 916 culprit and 765 nonculprit lesions...
May 2017: Coronary Artery Disease
https://www.readbyqxmd.com/read/28235580/parotoid-radial-and-tibial-macroglands-of-the-frog-odontophrynus-cultripes-differences-and-similarities-with-toads
#18
Pedro L Mailho-Fontana, Marta Maria Antoniazzi, Isabela Rodrigues, Juliana M Sciani, Daniel Carvalho Pimenta, Edmund D Brodie, Miguel Trefaut Rodrigues, Carlos Jared
Anuran integument is characterized by the presence of glands, some of which are responsible for toxin production. In some species these glands accumulate in parts of the body strategically located against predators, forming structures known as macroglands. This is the case for parotoid macroglands, on the dorsum of the head, tibial macroglands, on the rear limbs, and radial macroglands, on the forelimbs of toads and some other anurans. The toad Rhinella jimi, for example, simultaneously displays all three types of macroglands, which is unusual even among bufonids...
April 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28145038/predictability-in-community-dynamics
#19
Benjamin Blonder, Derek E Moulton, Jessica Blois, Brian J Enquist, Bente J Graae, Marc Macias-Fauria, Brian McGill, Sandra Nogué, Alejandro Ordonez, Brody Sandel, Jens-Christian Svenning
The coupling between community composition and climate change spans a gradient from no lags to strong lags. The no-lag hypothesis is the foundation of many ecophysiological models, correlative species distribution modelling and climate reconstruction approaches. Simple lag hypotheses have become prominent in disequilibrium ecology, proposing that communities track climate change following a fixed function or with a time delay. However, more complex dynamics are possible and may lead to memory effects and alternate unstable states...
March 2017: Ecology Letters
https://www.readbyqxmd.com/read/28100818/lowland-biotic-attrition-revisited-body-size-and-variation-among-climate-change-winners-and-losers
#20
Jedediah F Brodie, Matthew Strimas-Mackey, Jayasilan Mohd-Azlan, Alys Granados, Henry Bernard, Anthony J Giordano, Olga E Helmy
The responses of lowland tropical communities to climate change will critically influence global biodiversity but remain poorly understood. If species in these systems are unable to tolerate warming, the communities-currently the most diverse on Earth-may become depauperate ('biotic attrition'). In response to temperature changes, animals can adjust their distribution in space or their activity in time, but these two components of the niche are seldom considered together. We assessed the spatio-temporal niches of rainforest mammal species in Borneo across gradients in elevation and temperature...
January 25, 2017: Proceedings. Biological Sciences
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